remove prototypes with no matching function; ok claudio@

Like in ospfd use a static pkt_ptr buffer.

Do the same control cleanup as in ospfd. Move control_state and ctl_conns
into control.c nothing outside needs access to this.

Rename orig_rtr_lsa_area() to orig_rtr_lsa()

Now that area is part of iface, original orig_rtr_lsa() is useless. Also
verifying that area != NULL is not needed in some cases (these are
leftovers of the previous diff).

OK remi@

Refactor link state ack/req.

OK remi@

Scale send buffer on socket.

OK remi@

Convert sendto() to sendmsg().

This makes code similar to ospfd(8).

OK claudio@ deraadt@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@

Like in ospfd use a static pkt_ptr buffer.

Do the same control cleanup as in ospfd. Move control_state and ctl_conns
into control.c nothing outside needs access to this.

Rename orig_rtr_lsa_area() to orig_rtr_lsa()

Now that area is part of iface, original orig_rtr_lsa() is useless. Also
verifying that area != NULL is not needed in some cases (these are
leftovers of the previous diff).

OK remi@

Refactor link state ack/req.

OK remi@

Scale send buffer on socket.

OK remi@

Convert sendto() to sendmsg().

This makes code similar to ospfd(8).

OK claudio@ deraadt@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@

Rename orig_rtr_lsa_area() to orig_rtr_lsa()

Now that area is part of iface, original orig_rtr_lsa() is useless. Also
verifying that area != NULL is not needed in some cases (these are
leftovers of the previous diff).

OK remi@

Refactor link state ack/req.

OK remi@

Scale send buffer on socket.

OK remi@

Convert sendto() to sendmsg().

This makes code similar to ospfd(8).

OK claudio@ deraadt@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@

Refactor link state ack/req.

OK remi@

Scale send buffer on socket.

OK remi@

Convert sendto() to sendmsg().

This makes code similar to ospfd(8).

OK claudio@ deraadt@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@

Scale send buffer on socket.

OK remi@

Convert sendto() to sendmsg().

This makes code similar to ospfd(8).

OK claudio@ deraadt@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@

Convert sendto() to sendmsg().

This makes code similar to ospfd(8).

OK claudio@ deraadt@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@

Remove unnecessary netinet/in_systm.h include.

ok millert@

sync w/ospfd: improve snapshot handling; ok claudio, sthen

Origin network-LSA with options based on the options of the link-LSAs.
Without this fix Cisco's OSPF 6 ignores our network-LSAs.
ok claudio@

Rename some imsg bits to make namespace collisions less likely buf to
ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.

ok henning gilles claudio jacekm deraadt

For SPF calculation, we will need the source address specified
in hello packets by next-hop neighbours. So when notifying the
RDE of a new neighbour, send the source address, too.

ok claudio@

Remove origination of Intra-Area-Prefix LSAs from ospfe.
Will soon be done in rde instead.

"Sure but don't wait too long before readding the code in rde" claudio@

Originate Intra-Area-Prefix LSAs which reference a router LSA.
Routers can now advertise prefixes with global scope throughout
an area. This paves the way towards doing SPF calculations to
generate routing tables for a single area.
ok claudio@

Propagate the neighbour's interface ID, as received in hello packets,
to the RDE.
ok claudio@

First try at originating Link (type-8) LSA. Code is wrong and the initial
LSA is lost in lsa_flood. Put this in because it goes in the right direction
and ospf6d is work in progress. Add necessary framework so that we can print
Link LSA in ospf6ctl.
Diff mostly from stsp@ ospf6ctl part by myself

Send the interface index in the correct byte order and add iface_id to
struct nbr to identify the neighbors correclty.
From Stefan Sperling stsp (at) stsp.name

Monster commit of stuff I did mostly last month. What it does:
* removes kif and uses iface for everything interface related.
This removes unneeded data redundancy which makes the code more complex.
* adds the link local prefix to struct iface and attaches a list with
the other prefixes to the struct iface. This is needed to generate the
link LSA.
* disconnects struct iface from struct area (the backpointer is gone)
this will make the reload code a bit easier.
norby@ agrees with the direction we're heading with this

From ospfd: Funny typo, it is fib not fip so adjust function name.

In OSPFv3 auth crypt is no longer (actually all the auth code is gone) so
kill crypt_seq_num as well.

area_ospf_options() should return the options in network byte order.

From ospfd:
Do not overload nbr->options with the dd exchange bits. nbr->options is used
by the hello protocol. Instead add a dd_more flag that is used together with
(the renamed) dd_master flag.

send_packet() now takes a struct in6_addr as destination instead of a
struct sockaddr_in6 and builds the struct sockaddr_in6 internaly adding scope
if necessary. While there switch to sendto() we don't need any of the sendmsg()
features here.
OK norby@

Remaining bit of last night work. Make packet reception use all the goodies
introduced (checksumming is no longer needed, no IP header checking is needed,
get a in6_pktinfo with the ifindex and dest addr, cleanup and remove a lot
of other code). With this ospf6d is able to send and receive first hello
packets. OK norby@

Instead of IP_RECVIF we use IPV6_RECVPKTINFO to get the ifindex and the
destination address of incomming packets. This also removes the need for
IP_HDRINCL. Additionally use IPV6_CHECKSUM to let the kernel do the
necessary packet checksumming, way easier than doing it in userland.
OK norby@

Welcome ospf6d

The new ospf6d daemon will support OSPFv3, basically OSPF for IPv6 networks.

It is heavily based on ospfd(8), it is more or less a copy and paste of it.
Currently some unneeded stuff has been removed and the trasition from
IPv4 to IPv6 has begun.

ospf6d is not very usefull at the moment, it is being imported to allow more
people to work on it concurrently.

Not yet connected to the builds.

ok claudio@ dlg@