On Mon, Mar 22, 2010 at 9:17 PM, Pascal Hambourg <pascal.mail@xxxxxxxxxxxxxxx> wrote: > ratheesh k a écrit : >> >> suppose ip 8.8.8.8 is accessible thru gateway 10.232.18.5 and we >> configured the linux machine to accept >> icmp redirect messages ( if we set NET_IPV4_CONF_ACCEPT_REDIRECTS ) . > > Do you mean sysctl net.ipv4.conf.<interface>.accept_redirects ? > Note that this settings is ignored (and so are ICMP redirects) when > forwarding is enabled, thus when Linux acts as a router. > >> Linux will send packet to 8.8.8.8 thru 192.168.1.1 as per default >> route . The gateway machine ( ip 192.168.1.1 ) will respond back with >> icmp redirect . (I think so ) > > If it is configured to do so. If it runs a Linux kernel, see sysctl > net.ipv4.conf.<interface>.send_redirects. > >> So our linux machine can use the other route ? > > Yes, a temporary redirect route to 8.8.8.8 will be created in the > routing cache. You can see it with "ip route show cache". > > Note : This does not seem to be much related to netfilter. > -- > To unsubscribe from this list: send the line "unsubscribe netfilter" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > thanks a ton . >>>>>>> Note : This does not seem to be much related to netfilter I agree . I should not ask this kind of questions here ( any thing other than netfilter ) ? thanks, ratheesh -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
