Am 04.09.2012 um 20:34 schrieb James B. Byrne:
We use a dual homed CentOS-6.3 host for our Internet gateway router. Its internal nic (eth1) is configured such that the address 192.168.0.1 is one of its aliases.
# cat /etc/sysconfig/network-scripts/ifcfg-eth1:192BOOTPROTO=none BROADCAST=192.168.255.255 DEVICE=eth1:192
^^^^^^^^
IPADDR=192.168.0.1 IPV6INIT=no MTU="" NAME="LAN - Non-routable" NETMASK=255.255.0.0 NETWORK=192.168.0.0 ONBOOT=yes ONPARENT=yes
Internal packets routed to 192.168.209.41 are passing through this router out onto the network. I am afraid that the reason is not evident to me and I have been unable to locate an answer.
The primary address for eth1 has the following configuration:
# cat /etc/sysconfig/network-scripts/ifcfg-eth1 BOOTPROTO=none BROADCAST="" DEFROUTE=yes DEVICE=eth1
^^^^^^^^^
DOMAIN="hamilton.harte-lyne.ca harte-lyne.ca" GATEWAY=216.xxx.yyy.53 HWADDR=00:25:90:60:11:8D IPADDR=216.xxx.xxx.1 IPV4_FAILURE_FATAL=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6INIT=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes MACADDR="" MTU="" NAME="LAN Link - eth1" NETMASK="" NETWORK="" NM_CONTROLLED=no ONBOOT=yes PREFIX=24 TYPE=Ethernet UUID=9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04
What configuration setting am I missing that will cause packets to 192.168.ccc.ddd to stay on the LAN and not try and pass though the WAN interface?
Is it correct to set the internal net as alias on the public interface (216.xxx.xxx.1) - both via eth1? This is for sure not your intention. Maybe a typo ...
-- LF