Re: Discarding inbound ICMP REDIRECT by default
Ed Maste <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.net |
|---|---|
| Message-ID | <CAPyFy2A+MCGzu60Tk0ZMPbwqXt9J3+BTEuA5Cwcd2racmTauxQ@mail.gmail.com> |
On Fri, 14 Jun 2024 at 09:57, Rodney W. Grimes <[email protected]> wrote: > > I am not sure that it would "hang" the port, but by ignoring the > rediect your going to place additional burden on the router that > is trying to redirect you as all packets would have to be forwarded > by that router. I suppose it could hang you if infact the router > sent the redirect but did not forward the packet for you expecting > that a retransmission with your updated routing table due to the > redirect would get the flow going. The router is required to forward the packet (RFC1812); if an ICMP REDIRECT is necessary it is sent as the final step in unicast forwarding.