snow/wireguard-go
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Check for correct first nibble

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The code before assumed that the flow label was always zero.
This commit is contained in:
Jason A. Donenfeld 2018-04-20 05:30:22 +02:00
parent 4973ea0c9e
commit f5c256affd
1 changed files with 1 additions and 1 deletions
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2
tun_linux.go
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@ -273,7 +273,7 @@ func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
buff[0] = 0x00 buff[0] = 0x00
buff[1] = 0x00 buff[1] = 0x00
if buff[4] == ipv6.Version<<4 { if buff[4]>>4 == ipv6.Version {
buff[2] = 0x86 buff[2] = 0x86
buff[3] = 0xdd buff[3] = 0xdd
} else { } else {