On mar. 11 févr. 18:27:43 2020, Joakim Tjernlund wrote:
On Tue, 2020-02-11 at 18:18 +0100, Alarig Le Lay wrote:
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Hi,
On mar. 11 févr. 17:52:29 2020, Bastien Durel wrote:
7: wg4b: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 state UNKNOWN qlen 1000 inet6 fe80::3/128 scope link valid_lft forever preferred_lft forever 8: wg4a: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 state UNKNOWN qlen 1000 inet6 fe80::3/128 scope link valid_lft forever preferred_lft forever
Don’t put fe80 addresses by hand and definitely not with /128, let your kernel handles this.
I always wondered why not /128 ? In IPV4 they are just fine.
Because OSPF uses multicast. In IPv4 the route is implicitly on all interfaces. With IPv6, it’s the link-local. So if your address is /128 no route is added, and multicast can’t work. -- Alarig