Which two current RFCs discuss special use IP addresses that may be used as a checklist of invalid routing prefixes for IPv4 and IPv6 addresses?
What action will be taken by a Cisco IOS router if a TCP packet, with the DF bit set, is larger than the egress interface MTU?
What will the receiving router do when it receives a packet that is too large to forward, and the DF bit is not set in the IP header?