Trying to determine why path mtu discovery is failing on my Nexus 7K (running 6.1(2)). I have ip unreachables configured on the SVI but it doesn't appear as if the ICMP type 3 code 4 messages are being sent. I did a 'debug ip icmp' to try and validate the messages were being delivered but I never see them. Anyone know for sure if that debug would show them?
