In article <20010717110211.T984@ipex.cz> you wrote: > in RFC 1166 (Internet Numbers). So, it looks like that there is a possibility > to use 010.000.000.001 or equiv 10.0.0.1. yes but most implementations see this as octal, which means 8.0.0.1 for them: > ping 010.000.000.001 PING 010.000.000.001 (8.0.0.1) from 10.0.0.3 : 56(84) bytes of data. so in short: dont use it and in case you try to filter it, block it. there are even the possibility to give the address as hex like 0x08000001 or decimal like 134217729: > ping 0x8000001 PING 0x8000001 (8.0.0.1) from ... > ping 134217729 PING 134217729 (8.0.0.1) from ... > ping 8.1 PING 8.1 (8.0.0.1) from ... this is linux 2.4 kernel with glibc 2.1 and iputils-ss001110 on Debian. Greetings Bernd - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
