sync to unbound 1.20.0

heavy lifting by sthen

sync to unbound 1.19.3

heavy lifting by & OK sthen

sync to unbound 1.18.0; heavy lifting by sthen

Sync config.h, we have ed25519 support now.

sync to unbound 1.17.0; heavy lifting by sthen

Sync to libunbound 1.16.3

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to unbound 1.19.3

heavy lifting by & OK sthen

sync to unbound 1.18.0; heavy lifting by sthen

Sync config.h, we have ed25519 support now.

sync to unbound 1.17.0; heavy lifting by sthen

Sync to libunbound 1.16.3

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to unbound 1.18.0; heavy lifting by sthen

Sync config.h, we have ed25519 support now.

sync to unbound 1.17.0; heavy lifting by sthen

Sync to libunbound 1.16.3

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Sync config.h, we have ed25519 support now.

sync to unbound 1.17.0; heavy lifting by sthen

Sync to libunbound 1.16.3

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to unbound 1.17.0; heavy lifting by sthen

Sync to libunbound 1.16.3

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Sync to libunbound 1.16.3

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to libunbound 1.16.2; heavy lifting by sthen

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to libunbound 1.16.0; heavy lifting by sthen

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Update to libunbound 1.15.0; heavy lifting by sthen in unbound(8).

Upstream renamed parse_edns_from_pkt to parse_edns_from_query_pkt and
added two arguments (config_file and comm_point) that we don't use,
adjust callers in frontend accordingly.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Sync to unbound to allow interface names as scope-id in IPv6
link-local addresses. With this dns proposals from slaacd with
link-local addresses from slaacd(8) are wroking.

Requested by & OK kn

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to unbound 1.13.2
OK sthen

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to unbound 1.13.1; heavy lifting by sthen

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to libunbound 1.13.0

Support for channel reuse of TCP and TLS (DoT) streams should improve
latency when the DoT strategy is used in unwind.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Update to libunbound 1.12.0; heavy lifting by sthen

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

sync to libunbound-1.11.0
all heavy lifting done by sthen in unbound
testing benno

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Update to libunbound 1.10.0
Heavy lifting by sthen in unbound(8)
Tested by benno and matthieu

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Update to libunbound 1.9.6
Heavy lifting by sthen with updating in-tree unbound(8).

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Update to libunbound 1.9.3
Heavy lifting by sthen with updating in-tree unbound(8)

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

Update to libunbound 1.9.2
Heavy lifting by sthen when updating unbound(8).

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

update to libunbound 1.9.1; heavy lifting by sthen in unbound(8)

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.

update unwind's copy of libunbound to match the new 1.9.0 update in
/usr/src/usr.sbin/unbound, diff from florian@

Import bits from (lib)unbound that we need for unwind(8).

This is probably too much but allows us to keep in sync with
usr.sbin/unbound to be able to easily apply updates.