I rebooted by Gentoo system, and regret it greatly -- some update or other has invalidated my network configuration, and I still don't know how to fix it. (I'm posting this from an Ubuntu machine).
This machine's interface to the outside world is eth1 (eth0 exists, but is a local LAN). In /etc/conf.d/net, there was iface_eth1="64.166.164.49 broadcast 64.166.164.55 netmask 255.255.255.248" gateway="eth1/64.166.164.54" This used to work fine. Now it causes complaints about a deprecated syntax and advice to go look in /etc/conf.d/net.example. It also complains that there's no module to provide broadcast or netmask. Moreover, it does not bring up a useable network. Here's the output of route(1) Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 64.166.164.48 * 255.255.255.248 U 0 0 0 eth1 loopback * 255.0.0.0 U 0 0 0 lo Note the lack of a gateway. I've tried various other things after looking into net.example, and here's the most likely thing I've come up with: config_eth1=( "64.166.164.49/29 brd 64.166.164.55" ) gateway=( "eth1/64.166.164.54" ) This no longer gives me syntax complaints, but also does not bring up a gateway: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 64.166.164.48 * 255.255.255.248 U 0 0 0 eth1 loopback * 255.0.0.0 U 0 0 0 lo So I tried going back to tried and true things: ifconfig. I tried this script: ifconfig eth1 down ifconfig eth1 64.166.164.49 netmask 255.255.255.248 ifconfig eth1 up route add 0.0.0.0 gw 64.166.164.54 And now I have a gateway of sorts, but it does not work: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default router 255.255.255.255 UGH 0 0 0 eth1 64.166.164.48 * 255.255.255.248 U 0 0 0 eth1 loopback * 255.0.0.0 U 0 0 0 lo I compared this to the output of route(1) on this Ubuntu box, and notice that the flags contain "H", which means 'the target is a host'. This also happens if I give a netmask of 0.0.0.0 in the route command. I know it's not working because any attempt I've made to send packets beyond the router have failed with "network unreachable", and tcpdump indicates that NO packets were sent. On the other hand, pinging the router itself works, and tcpdump can see it. The router in in the telco CO, not here, and is also used by this Ubuntu machine, so it is not implicated. I also know that the interface card is working locally, because I can get in via ssh from this Ubuntu machine. I cannot get in from beyond the router because the host does not know to send reply packets to the gateway. It appears that I need to have a gateway (so my /etc/conf.d/net needs to do that) and it may need to have the "H" flag off. Can anyone else who uses a static IP setup take a look and see what I'm doing differently? ++ kevin -- Kevin O'Gorman, PhD -- gentoo-user@gentoo.org mailing list
