@yousra if we define a block like this at node level:

In addition to this change, we also need to reuse our dedicated IP address for e-mails:

Best short-term solution, to allow mail from Docker services too, is to allow the new router IP.

When router-002 takes over, the default route changes as expected.

However, after the default route was changed, complector could no longer reach the Internet (e.g. ping 8.8.8.8).

After testing Complector with OSPF enabled to receive the default route, it works as expected.

Finally check after T2319 :

@dereckson While testing and modifying the GRE tunnel, it took so long on Ysul that SSH stopped responding, and we lost access to the machine.

Now, regardless of whether router-002 or router-003 is the primary router, the tunnel with Windriver works perfectly. However, there is still an issue with Ysul: the tunnel works when router-003 is primary, but it does not work when router-002 is primary.