| commit | dbc17037815bdce5df3f355f2171c57804f7870e | [log] [tgz] |
|---|---|---|
| author | jfbus <jf@bustarret.com> | Tue Mar 26 18:21:53 2019 +0000 |
| committer | Brad Fitzpatrick <bradfitz@golang.org> | Wed Apr 17 14:42:35 2019 +0000 |
| tree | d1b7e6669f254f3642b3e9aa3c11d151cc6d9bb5 | |
| parent | 33e5da48d5d22a722f2363b15e2d53061fb71cf4 [diff] |
net: support single-request resolv.conf option in pure Go resolver There is a DNS resolution issue in Kubernetes (UDP response packets get dropped due to a race in conntrack between the parallel A and AAAA queries, causing timeouts in DNS queries). A workaround is to enable single-request / single-request-reopen in resolv.conf in order to use sequential A and AAAA queries instead of parallel queries. With this PR, the pure Go resolver searches for "single-request" and "single-request-reopen" in resolv.conf and send A and AAAA queries sequentially when found. Fixes #29644 Change-Id: I906b3484008c1b9adf2e3e9241ea23767e29df59 GitHub-Last-Rev: d481acfb4c49d82fd474078b31a1a4697b57dadf GitHub-Pull-Request: golang/go#29661 Reviewed-on: https://go-review.googlesource.com/c/go/+/157377 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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