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save only the link-local addresses for multicast

This commit is contained in:
Arceliar 2020-05-03 05:06:59 -05:00
parent de79401bb2
commit 95f4ec52a4

View File

@ -292,15 +292,15 @@ func (m *Multicast) _updateInterfaces() {
aInfo.addrs, _ = iface.Addrs()
aInfo.time = time.Now()
}
hasLLAddr := false
lladdrs := aInfo.addrs[:0]
for _, addr := range aInfo.addrs {
addrIP, _, _ := net.ParseCIDR(addr.String())
if addrIP.To4() == nil && addrIP.IsLinkLocalUnicast() {
hasLLAddr = true
break
lladdrs = append(lladdrs, addr)
}
}
if !hasLLAddr {
aInfo.addrs = lladdrs
if len(lladdrs) == 0 {
// Ignore interfaces without link-local addresses
continue
}