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Fix external DNS responses > 512 bytes getting dropped

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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
This commit is contained in:
Santhosh Manohar 2016-08-03 05:29:32 -07:00
parent 8825f80d8c
commit bd5051931f
1 changed files with 4 additions and 1 deletions
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5
libnetwork/resolver.go
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@ -361,7 +361,10 @@ func (r *resolver) ServeDNS(w dns.ResponseWriter, query *dns.Msg) {
// Timeout has to be set for every IO operation.
extConn.SetDeadline(time.Now().Add(extIOTimeout))
co := &dns.Conn{Conn: extConn}
co := &dns.Conn{
Conn: extConn,
UDPSize: uint16(maxSize),
}
defer co.Close()
// limits the number of outstanding concurrent queries.