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Consider more IPs to be local

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This commit is contained in:
Peter Gerber 2020-09-21 15:53:24 +00:00
parent 2d43dd26b1
commit 8467c01e9e
2 changed files with 7 additions and 1 deletions
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6
common/util/util.go
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@ -56,7 +56,11 @@ func IsLocal(ip net.IP) bool {
// Local IPv4 addresses are defined in https://tools.ietf.org/html/rfc1918
return ip4[0] == 10 ||
(ip4[0] == 172 && ip4[1]&0xf0 == 16) ||
(ip4[0] == 192 && ip4[1] == 168)
(ip4[0] == 192 && ip4[1] == 168) ||
// Carrier-Grade NAT as per https://tools.ietf.org/htm/rfc6598
(ip4[0] == 100 && ip4[1]&0xc0 == 64) ||
// Dynamic Configuration as per https://tools.ietf.org/htm/rfc3927
(ip4[0] == 169 && ip4[1] == 254)
}
// Local IPv6 addresses are defined in https://tools.ietf.org/html/rfc4193
return len(ip) == net.IPv6len && ip[0]&0xfe == 0xfc