diff options
Diffstat (limited to 'src/net/dnsclient_unix.go')
| -rw-r--r-- | src/net/dnsclient_unix.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/net/dnsclient_unix.go b/src/net/dnsclient_unix.go index 50e9bb0f20..6dfd4af957 100644 --- a/src/net/dnsclient_unix.go +++ b/src/net/dnsclient_unix.go @@ -31,6 +31,10 @@ const ( // to be used as a useTCP parameter to exchange useTCPOnly = true useUDPOrTCP = false + + // Maximum DNS packet size. + // Value taken from https://dnsflagday.net/2020/. + maxDNSPacketSize = 1232 ) var ( @@ -83,7 +87,7 @@ func dnsPacketRoundTrip(c Conn, id uint16, query dnsmessage.Question, b []byte) return dnsmessage.Parser{}, dnsmessage.Header{}, err } - b = make([]byte, 512) // see RFC 1035 + b = make([]byte, maxDNSPacketSize) for { n, err := c.Read(b) if err != nil { |