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| author | Rich Felker <dalias@aerifal.cx> | 2022-08-26 14:57:52 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2022-08-26 14:57:52 -0400 |
| commit | a636fd630f70da01665c5cfaf01b8a657ef6c2fe (patch) | |
| tree | 97b1fc183da78036001a173fd9c417ee326e8cc0 /src/string/memccpy.c | |
| parent | 996b6154b20184c3b08cce28eb01edb7f47e9413 (diff) | |
| download | musl-a636fd630f70da01665c5cfaf01b8a657ef6c2fe.tar.gz musl-a636fd630f70da01665c5cfaf01b8a657ef6c2fe.tar.xz musl-a636fd630f70da01665c5cfaf01b8a657ef6c2fe.zip | |
dns: fail if ipv6 is disabled and resolv.conf has only v6 nameserves
if resolv.conf lists no nameservers at all, the default of 127.0.0.1 is used. however, another "no nameservers" case arises where the system has ipv6 support disabled/configured-out and resolv.conf only contains v6 nameservers. this caused the resolver to repeat socket operations that will necessarily fail (sending to one or more wrong-family addresses) while waiting for a timeout. it would be contrary to configured intent to query 127.0.0.1 in this case, but the current behavior is not conducive to diagnosing the configuration problem. instead, fail immediately with EAI_SYSTEM and errno==EAFNOSUPPORT so that the configuration error is reportable.
Diffstat (limited to 'src/string/memccpy.c')
0 files changed, 0 insertions, 0 deletions