On Wednesday 2020-09-02 16:08, Per Jessen wrote:
NetworkManager: 2001:xxxx:xxxx:xxxx::/64 via fe80::7eff:4dff:fea9:7368 proto ra metric 600 pref medium
2001:xxxx:xxxx:xxxx::/64 proto kernel metric 256 expires 6976sec pref medium
Unless I completely misread those two, although they are different, the end effect should be the same? It is odd to have that extra via on the 2001 route, but does it cause any problems ?
Yes. - local network 2001:x::/64 - own machine 2001:x::1 - other machine on your LAN 2001:x::2 - ping packet from 2001:x::1 to 2001:x::2 is routed via fe80::7368[router], due to faulty route table entry - fe80::7368 would need to forward it (input interface equal to output interface is a suspect action, it's prone to packet looping, or indicative of (abused) proxies and amplification attacks) - ping response from 2001:x::2 to 2001:x::1 is direct, because of a proper route table in the 2001:x::2 machine. - 2001:x::1 may discards said ping response because it did not come from the gateway enlisted for the source address ("reverse path filtering"). -> possible nonfunctional v6 networking for communications between 2001:x::/64 and 2001:x::1, depending on firewall settings. -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org