[immibis]

If it's your real IP, it's not spoofing, even if you send the packet through a different ISP than the one which gave you the IP. If you think about it: if you got an IP directly from ARIN you wouldn't have to send your packets through ARIN to make them legitimate.

[Jerrrrrrry]

un-validated spoofed egress causes problems when everyone tests their egress-effectiveness at once.

there is no "ingress," just a firewall of bad peers.

[immibis]

What? It's not spoofing because it's their real IP.

[Jerrrrrrry]

  >If you think about it:

I genuinely stopped reading there somehow subconsciously, and have a lil read to do, thank you.