disco: func IsCGN supports ipv6

rkonfj · rkonfj · commit 32ef0f584a54 · 2024-12-21T11:09:23.000+08:00
diff --git a/disco/local_addr.go b/disco/local_addr.go
@@ -127,5 +127,8 @@ func ListLocalIPs() ([]net.IP, error) {
 var carrierGradeNAT = netip.MustParsePrefix("100.64.0.0/10")
 
 func IsCGN(ip net.IP) bool {
+	if ip.To4() == nil {
+		return false
+	}
 	return carrierGradeNAT.Contains(netip.AddrFrom4([4]byte(ip.To4())))
 }

Original file line number	Diff line number	Diff line change
`@@ -127,5 +127,8 @@ func ListLocalIPs() ([]net.IP, error) {`
`127`	`127`	`var carrierGradeNAT = netip.MustParsePrefix("100.64.0.0/10")`
`128`	`128`
`129`	`129`	`func IsCGN(ip net.IP) bool {`
	`130`	`+ if ip.To4() == nil {`
	`131`	`+ return false`
	`132`	`+ }`
`130`	`133`	`return carrierGradeNAT.Contains(netip.AddrFrom4([4]byte(ip.To4())))`
`131`	`134`	`}`