A very strange thing happened today. My SOHO router, a MikroTik RB951G-2HnD, suddenly stopped routing. It was very odd - I could reach the router, the router could reach the world, but nothing inside our networks could reach the outside world. Well, actually I *could* reach the outside world for some things - in particular, Google. That was the clue. A look at the NAT table revealed that it was gone - no IPv4 NAT rules at all. It seems that at some time this morning, probably around 11:30am, the router lost its entire IPv4 NAT configuration. Other stuff under /"ip firewall" was fine - it was *only* the NAT rules that were gone. The reason I could still see Google was that Google is reachable on IPv6, which is not NATted, and I run a dual stack network. So I restored from backup and thirty seconds later we were back on line. But: How did this happen? Have others seen this? It's a bit of a worry - we have quite a few MikroTiks deployed... cursory googling doesn't show it up as a well-known issue. Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (kauer@nullarbor.com.au) work +61 2 64957435 http://www.nullarbor.com.au mobile +61 428 957160 GPG fingerprint: 231A B066 CF91 1216 4F0F F2AC CE25 B8AA 46DC CC4F Old fingerprint: 1DB8 0599 13F0 E774 3811 6CA6 D6D0 AFA9 D91A 004C