While I understand this is a very rudimentary question, I've looked around a bit and a bit in the vpp code too. Albeit not extensively I'm going through the vpp progressive tutorial here: https://fd.io/docs/vpp/master/gettingstarted/progressivevpp/routing.html and while I'm able to ping vpp2 from the host. I can't seem to ping the host from vpp2 (i.e ping 10.10.1.1 on vpp2 does not work). It fails with the following message:
vpp# ping 10.10.1.1 repeat 2 Failed: no source address for egress interface Failed: no source address for egress interface While looking through the code a bit I understand that it's not able to set the source address for the packet, but I don't understand why. Even the routing table looks fine. Would like to get some pointers as to what directions to look in to understand this. Attaching the topology for reference.
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