packet loss question

Fri Jul 8 03:53:38 UTC 2016

On Thu, Jul 7, 2016 at 3:52 PM, Ken Chase <math at sizone.org> wrote:
> ICMP is allowed to be dropped by intervening routers. Someone will quote an RFC
> at us shortly.

Hi Ken,

That's not correct. Routers might not generate an ICMP time-exceeded
packet for every packet whose TTL reaches zero, but that's not the
same thing. Routers dropping ICMP packets in transit would be bad.
Protocols like TCP depend on path MTU discovery and path MTU discovery
critically depends on ICMP.

Regards,
Bill Herrin

-- 
William Herrin ................ herrin at dirtside.com  bill at herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>