Nullroute (blackhole/unreachable)

Marco Moock mm at dorfdsl.de
Thu Apr 18 11:09:20 UTC 2024


Hello!

In some circumstances it is necessary to route a net to /dev/null
(called Null0 on Cisco). This can result in an ICMP unreachable message.

e.g.
ip route add unreachable 2001:db8::/56 #gives ICMP no route to dest
ip route add blackhole 2001:db8::/56 #silently discards packet

Is there any way to configure that within NM?

-- 
kind regards
Marco Moock


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