Re: missing icmp errors for udp packets

[clemens <therapy@xxxxxxxxxxxxx>]

On Sun, Jul 29, 2001 at 07:57:48AM +0300, Pekka Savola wrote:

> HOWEVER, I noticed that 'nmap -P0' (ie. don't ping first) always works
> without problems!

probably there is a bug in the icmp reply throttling code?

without pinging first, there are icmp replies.
with pinging first, there are no icmp replies.
with pinging and heavy udp scanning, there are a few (throttled) icmp
replies. (try yourself)

seems like the icmpsendingrate isn't resetted below the threshold properly?

clemens

p.s.:
does this somehow explain why this whole issue doesn't apply to the loopback
devices?