This was helpful: https://en.wikipedia.org/wiki/IPv6_address#Scoped_literal_IPv6_addresses_(with_zone_index) https://en.wikipedia.org/wiki/IPv6_address#Scoped_

This was helpful: https://en.wikipedia.org/wiki/IPv6_address#Scoped_literal_IPv6_addresses_(with_zone_index) https://en.wikipedia.org/wiki/IPv6_address#Scoped_literal_IP... Apparently it's possible to embed interface name into an address: fe80::1ff:fe23:4567:890a%eth2 The article also points to an alternative solution - embed interface index into an address: fe80:3::1ff:fe23:4567:890a