Hi! I've been using this kind of configuration on my Linux router for a few years: eth0 80.223.77.223, public internet ip eth0:0 10.0.0.1, private network ip IP forwarding enabled. And a rule for iptables: -A POSTROUTING -s 10.0.0.0/255.255.255.0 -d ! 10.0.0.0/255.255.255.0 -j SNAT --to-source 80.223.77.223 Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 0.0.0.0 255.255.255.0 U 10 0 0 eth0 80.223.64.0 0.0.0.0 255.255.240.0 U 10 0 0 eth0 0.0.0.0 80.223.64.1 0.0.0.0 UG 10 0 0 eth0 However, I get lots of this kind of messages in the dmesg while routing: host 10.0.0.4/if2 ignores redirects for 70.35.xxx.xxx to 80.223.64.1. host 10.0.0.4/if2 ignores redirects for 68.219.xxx.xxx to 80.223.64.1. host 10.0.0.4/if2 ignores redirects for 193.88.xxx.xxx to 80.223.64.1. host 10.0.0.4/if2 ignores redirects for 80.81.xxx.xxx to 80.223.64.1. host 10.0.0.4/if2 ignores redirects for 80.81.xxx.xxx to 80.223.64.1. 10.0.0.4 is a Windows machine in the private network set to use 10.0.0.1 (router) as a gateway. 80.223.64.1 is the ISP gateway. The third ip number in the log message is the ip number of a server, to which the 10.0.0.4 is connected. Note that the routing itself works just fine, there is just this log message flood. Please advise. -- Anssi Hannula
