mdnsd(8): restore fixes for PR bin/46758, lost on resolving merge conflicts.
Original commit message from Roy Marples:
"Derive our primary interface and address by trying to connect to an
address in the TEST-NET-2 network as noted in RFC5737 instead of using
the 1.1.1.1 address. Also, use port 7 (echo) for better style.
Fixes PR bin/46758 thanks to Lloyd Parkes."

pullups needed for netbsd-9, netbsd-10.

branches: 1.6.6;
mdnsd: Treat EADDRNOTAVAIL as a transient error

branches: 1.5.4;
initialize addr to 0.

branches: 1.4.2;
resolve conflicts

merge conflicts

Derive our primary interface and address by trying to connect to an
address in the TEST-NET-2 network as noted in RFC5737 instead of using
the 1.1.1.1 address. Also, use port 7 (echo) for better style.
Fixes PR bin/46758 thanks to Lloyd Parkes.

While here, if we do fail to connect to the test address, don't spam
this to the console as it's a common case during the boot sequence.

branches: 1.1.1;
Initial revision

mdnsd: Treat EADDRNOTAVAIL as a transient error

initialize addr to 0.

branches: 1.4.2;
resolve conflicts

merge conflicts

Derive our primary interface and address by trying to connect to an
address in the TEST-NET-2 network as noted in RFC5737 instead of using
the 1.1.1.1 address. Also, use port 7 (echo) for better style.
Fixes PR bin/46758 thanks to Lloyd Parkes.

While here, if we do fail to connect to the test address, don't spam
this to the console as it's a common case during the boot sequence.

branches: 1.1.1;
Initial revision

initialize addr to 0.

resolve conflicts

merge conflicts

Derive our primary interface and address by trying to connect to an
address in the TEST-NET-2 network as noted in RFC5737 instead of using
the 1.1.1.1 address. Also, use port 7 (echo) for better style.
Fixes PR bin/46758 thanks to Lloyd Parkes.

While here, if we do fail to connect to the test address, don't spam
this to the console as it's a common case during the boot sequence.

branches: 1.1.1;
Initial revision

resolve conflicts

merge conflicts

Derive our primary interface and address by trying to connect to an
address in the TEST-NET-2 network as noted in RFC5737 instead of using
the 1.1.1.1 address. Also, use port 7 (echo) for better style.
Fixes PR bin/46758 thanks to Lloyd Parkes.

While here, if we do fail to connect to the test address, don't spam
this to the console as it's a common case during the boot sequence.

branches: 1.1.1;
Initial revision

Derive our primary interface and address by trying to connect to an
address in the TEST-NET-2 network as noted in RFC5737 instead of using
the 1.1.1.1 address. Also, use port 7 (echo) for better style.
Fixes PR bin/46758 thanks to Lloyd Parkes.

While here, if we do fail to connect to the test address, don't spam
this to the console as it's a common case during the boot sequence.

branches: 1.1.1;
Initial revision

branches: 1.1.1;
Initial revision

Import mDNSResponder-320.16, as previous import (258.14) is quite old

Import mDNSResponder-258-14 as per discussion with gdt@ and cristos@

branches: 1.1.1.1.6; 1.1.1.1.12;
Import Apple's mDNSResponder 212.1 per tech-net discussion

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")