Hello all, Sometimes I get this in my logfile : kernel: IP_MASQ:reverse ICMP: failed checksum from 195.64.6.130! Dec 28 00:10:33 zwiffelzwaffel kernel: IP_MASQ:reverse ICMP: failed checksum from 213.7.32.37! Dec 28 12:17:51 zwiffelzwaffel kernel: eth1: Setting Rx mode to 1 addresses. I am not sure how to interpret this, because , as yet, I don't know enough about ICMP. What is happening here, is it serious ? The kernel puts it also in /var/log/warn, so... anyway, thanks in advance for any response.... JohnvD