ICMP Blocking Woes

Tue Sep 30 22:45:04 UTC 2003

> AFAIK, it's been that way since Win95.  I recall a certain
> vendor's dodgy ISDN router * * * on Windows traceroute, but
> working fine under *ix... for whatever reason, said router didn't
> like the ICMP traceroute, but returned unreachables in response
> to UDP when TTL expired.
> 
> 
> Eddy

Wasn't this based upon the premise that gear should not return ICMP
errors as a result of ICMP packet input as a precaution against error
loops? ie said dodgy router did the _right_ thing?