nanog mailing list archives

Re: : Can a prefix be never routed on Internet but used only for source address in IP packets?

From: Randy Bush via NANOG <nanog () lists nanog org>
Date: Tue, 19 Aug 2025 20:25:44 -0700

I believe IXP networks are usually like this. Globally assigned IPs,
and routers can use their IPs on the network to originate ICMP packets
(e.g. TTL exceeded during traceroute; or packet too big)


actually, the inter participant bgp peering (and peering with RSs) is
done using TCP over that non-announced address space.

randy
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Current thread:

Re: : Can a prefix be never routed on Internet but used only for source address in IP packets? Jakob Heitz (jheitz) via NANOG (Aug 19)
- Re: : Can a prefix be never routed on Internet but used only for source address in IP packets? nanog--- via NANOG (Aug 19)
  - Re: : Can a prefix be never routed on Internet but used only for source address in IP packets? Randy Bush via NANOG (Aug 19)
  - Re: : Can a prefix be never routed on Internet but used only for source address in IP packets? Nick Hilliard via NANOG (Aug 20)