, here's the thing, from pc1 ping pc3 NAT work is normal, but from pc3 ping when pc1 NAT started,
I explain the question:
Because is enabled for routing protocols, sends the icmp request and icmp reply when ping,
From pc3 can find pc1 so icmp request through the routing table can be in the past, but
From pc1 to pc3 send icmp response, the router r3, NAT should play a role, but this time,
I debug r3 NAT found NAT has not started, this leads to the icmp response without NAT returned directly pc3.
As a result of pc3 can ping pc1.
I think should can't, because from pc1 to the pc3 icmp response should be NAT, therefore pc3 should not receive the pc1 response, so should not generalist to ping
CodePudding user response:
