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filter non usabel IPs from state changes

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This commit is contained in:
Alex
2025-02-06 16:03:52 -05:00
committed by Cuong Manh Le
parent 4a05fb6b28
commit fef85cadeb
1 changed files with 30 additions and 5 deletions
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35
cmd/cli/dns_proxy.go
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@@ -1419,14 +1419,39 @@ func interfaceIPsEqual(a, b []netip.Prefix) bool {
return false
}
// Create maps for easier comparison
aMap := make(map[netip.Prefix]bool)
for _, ip := range a {
aMap[ip] = true
isUsableIP := func(ip netip.Prefix) bool {
addr := ip.Addr()
return !addr.IsLinkLocalUnicast() && // fe80::/10
!addr.IsLoopback() && // 127.0.0.1/8, ::1
!addr.IsMulticast() && // 224.0.0.0/4, ff00::/8
!addr.IsUnspecified() && // 0.0.0.0, ::
!addr.IsLinkLocalMulticast() && // 224.0.0.0/24
!(addr.Is4() && addr.String() == "255.255.255.255") && // broadcast
!tsaddr.CGNATRange().Contains(addr) // 100.64.0.0/10 CGNAT
}
// Filter and create maps for comparison
aMap := make(map[netip.Prefix]bool)
for _, ip := range a {
if isUsableIP(ip) {
aMap[ip] = true
}
}
bMap := make(map[netip.Prefix]bool)
for _, ip := range b {
if !aMap[ip] {
if isUsableIP(ip) {
bMap[ip] = true
}
}
// Compare the filtered IP sets
if len(aMap) != len(bMap) {
return false
}
for ip := range aMap {
if !bMap[ip] {
return false
}
}