Trying IPv6 sockets w/ IPv6 being available but down, leads to connection failures

[erikarn]

This is ... kinda silly? I'm going to work around it for now by using -b but it would be nice to update socket logic to try different hosts.

The TL;DR is:

• resolve() returns the host list
• connect_socks_target() only tries /one/ entry in the list
• github.com returns only A records
• freebsd.org git repo IPs return AAAA and A records
• my interfaces have local v6 addresses but currently (for stupid reasons) no global v6 addresses
• so, if I try connecting to freebsd.org hosts, it will see AAAA is likely fine, bind() ok, connect() hits "HOST_UNREACHABLE" and bam.

It would be nice if instead it could loop over the hosts returned by getaddrinfo() and try them until one succeeds?

[rofl0r]

you could also patch resolve to use either AF_INET or AF_INET6 for hints instead of AF_UNSPEC. the code kinda expects that one has his internet connectivity properly set up. maybe i'll take a look at implementing a loop here, but it's the first time anyone complains.

[erikarn]

Yeah, I'm fixing it up right now to try the returned list in a loop. Stay tuned!

(Also yeah I also dislike when internet isn't "properly set up" but somehow I'm not getting a v6 lease, only a v4. I need to go figure THAT out too.) (And yeah, my LAN stuff also has v6 enabled!)

-adrian

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