From fc667b98e0587dcebe19183b83f99059513dba0e Mon Sep 17 00:00:00 2001 From: Miek Gieben Date: Thu, 6 Dec 2018 21:18:11 +0000 Subject: Fix EDNS0 compliance (#2357) * Fix EDNS0 compliance Do SizeAndDo in the server (ScrubWriter) and remove all uses of this from the plugins. Also *always* do it. This is to get into compliance for https://dnsflagday.net/. The pkg/edns0 now exports the EDNS0 options we understand; this is exported to allow plugins add things there. The *rewrite* plugin used this to add custom EDNS0 option codes that the server needs to understand. This also needs a new release of miekg/dns because it triggered a race-condition that was basicly there forever. See: * https://github.com/miekg/dns/issues/857 * https://github.com/miekg/dns/pull/859 Running a test instance and pointing the https://ednscomp.isc.org/ednscomp to it shows the tests are now fixed: ~~~ EDNS Compliance Tester Checking: 'miek.nl' as at 2018-12-01T17:53:15Z miek.nl. @147.75.204.203 (drone.coredns.io.): dns=ok edns=ok edns1=ok edns@512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok miek.nl. @2604:1380:2002:a000::1 (drone.coredns.io.): dns=ok edns=ok edns1=ok edns@512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie=ok edns512tcp=ok optlist=ok All Ok Codes ok - test passed. ~~~ Signed-off-by: Miek Gieben Signed-off-by: Miek Gieben * typos in comments Signed-off-by: Miek Gieben --- plugin/erratic/erratic.go | 1 - 1 file changed, 1 deletion(-) (limited to 'plugin/erratic/erratic.go') diff --git a/plugin/erratic/erratic.go b/plugin/erratic/erratic.go index f60e605d1..3b22e225d 100644 --- a/plugin/erratic/erratic.go +++ b/plugin/erratic/erratic.go @@ -97,7 +97,6 @@ func (e *Erratic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg time.Sleep(e.duration) } - state.SizeAndDo(m) w.WriteMsg(m) return 0, nil -- cgit v1.2.3