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Set EDNS0 when no extra options are set by the dns client (#2195)

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Maycon Santos 2024-06-25 17:18:04 +02:00 committed by GitHub
parent 43a8ba97e3
commit d2157bda66
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1 changed files with 4 additions and 0 deletions
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4
client/internal/dns/upstream.go
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@ -78,6 +78,10 @@ func (u *upstreamResolverBase) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
}()
log.WithField("question", r.Question[0]).Trace("received an upstream question")
// set the EDNS0 buffer size to 4096 bytes to support larger dns records
if r.Extra == nil {
r.SetEdns0(4096, true)
}
select {
case <-u.ctx.Done():