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only set DF for sockets that can handle it (#3448)

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Fixes #3445
This commit is contained in:
Nuno Diegues 2022-06-19 18:38:34 +01:00 • committed by GitHub
parent 6fbc6d951a
commit 706a482340
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1 changed files with 7 additions and 3 deletions
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10
sys_conn.go
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@ -30,9 +30,13 @@ func wrapConn(pc net.PacketConn) (rawConn, error) {
if err != nil {
return nil, err
}
err = setDF(rawConn)
if err != nil {
return nil, err
if _, ok := pc.LocalAddr().(*net.UDPAddr); ok {
// Only set DF on sockets that we expect to be able to handle that configuration.
err = setDF(rawConn)
if err != nil {
return nil, err
}
}
}
c, ok := pc.(OOBCapablePacketConn)