Arrg... IP alias troubles

baylock · n00b Joined: 26 Oct 2004 Posts: 3

please help....
recently i needed to rebuild my gentoobox, and noticed something about the base layout... so i upgraded it.
now im stuck with a problem.

a litttle background first.

When i moved in with some mates they already had a network up and running, so it was jsut a case of getting the box to work with it,
first thin i tryed was static IP, and the box worked, and all, but i could not get on the internet with it. so i come to the conclusion of useing dhcp. the problem with that was that the IP would keep changeing on each boot, so i assighned som alias's in the /ect/conf.d/net file, and everything worked.
for some reason the router we are useing will not let an IP connect to the net unless it was assighned by dhcp. So with dhcp up an running, and alias's assighned everything was great.

now with the new base lay out, the alias_eth0="xxx.xxx.xxx.xxx" command does not work.

does any one know how to assighn eather an alias, or preferably something like a hostname that i can use putty to access the system with?? as i am unable to ping the box via the hostname i have set in the hostname file

and yes i searched, eather im searching for the wrong thing, or not understanding the answers... thanc for your help

the_mgt · Posted: Fri Aug 05, 2005 4:30 pm Post subject:

Can't you just hardwire an ip to your MAC adress?
Or change the lease time to something longer than a year.
What is the dhcp server you are using for your network? Both solutions only work if you have acces to the dhcp server.

Hostnames only work, if you have a DNS Server on your network.

UberLord · Posted: Fri Aug 05, 2005 11:18 pm Post subject:

Here's the problem.

baselayout-1.8 and earlier where ifconfig only and supported the iface="foo" alias="bar" syntax
baselayout-1.9 introduced iproute2 syntax iproute_eth0 (no aliases) and ifconfig_eth0 with the old iface aliases syntax
baselayout-1.10 was a bust
baselayout-1.11 joined the two together with a universal config_eth0=( "addr1" "addr2" ) syntax which also took care of aliases
baselayout-1.11 also defaulted to ifconfig so the joining was pretty much error free.

With baselayout-1.12.0 we are confident we have joined to two - but with one exception. The old way of doing aliases is ifconfig specific and we have changed the default to iproute2. iproute2 has no concept of an "alias" (which is basically a work-around for an ifconfig limitation) and neither do modern kernels as it's still the same interface.

I would rather bring peoples config up to date with modern concepts and ideals rather than support aliases.

If you disagree, open a bug. I'll close it and explain why - basically what I've said here. If a patch is provided (to the 1.12.0 series) then I may listen.

Have a nice day

baylock · n00b Joined: 26 Oct 2004 Posts: 3

Thax uber... i think i understsand.

basicly to make lots of other things work better, some others had to be sacrificed??
fair nuf...

how about getting it to broadcast the hoas name?? im probably missing something simple to get it to work, but i just cant seem to get it to work.

once again thanx for your help

UberLord · Posted: Sat Aug 06, 2005 10:48 am Post subject:

baylock · n00b Joined: 26 Oct 2004 Posts: 3

ok... kewl... looks like lease times for me then... thanx for ur time

STEDevil · Apprentice Joined: 24 Apr 2003 Posts: 156

akbarstatx · Posted: Thu Mar 09, 2006 5:15 am Post subject:

iproute may not technically support aliases but it does allow you to label an interface so that ifconfig displays the labeled interface as an alias. e.g.

UberLord · Posted: Thu Mar 09, 2006 8:30 am Post subject:

red-wolf76 · Posted: Wed Dec 13, 2006 8:21 am Post subject:

EDIT: The problem was solved by adding the default route, in my case route add default gw 192.168.1.1. Haven't the foggiest why my config didn't do that. Has the sensitivity to comments increased, by any chance? The commented lines are kept in the config because I sometimes move the box to my network at home.

EDIT2: *bump* The problem persists after re-booting. Even though I have defined the default via, as per spec, I positively must manually add the route to be able to access the internet. What gives? Sth broken? Output of route is as follows: