Gentoo Archives: gentoo-user

From: Walter Dnes <waltdnes@××××××××.org>
To: Gentoo Users List <gentoo-user@l.g.o>
Subject: [gentoo-user] Multiple addresses/routes for one ethernet card possible?
Date: Sat, 24 Oct 2020 04:56:36
Message-Id: 20201024045554.GA11754@waltdnes.org
1 After an outage on VDSL last month, I got a backup 10/1 cable
2 subscription backup. Switching is a bit of a hassle. In addition to
3 swapping cables, I have to run dhcpcd as root or sudo when swithching
4 from VDSL to cable. Switching back I have to run "dhcpcd -x", copy over
5 my backup of /etc/resolve.conf, and run "/etc/init.d/net.eth0 restart".
6
7 The VDSL router/modem offers dhcp and static address space at
8 192.168.1.0/24, DNS and default GW 192.168.1.1. I've bought a router
9 that gets a WAN address from the cable modem via dhcpcd, and offers dhcp
10 and static address space at 192.168.10.0/24, DNS and default GW
11 192.168.10.1. My current /etc/conf.d/net is...
12
13 mtu_eth0="1466"
14 config_eth0="
15 192.168.1.249/24 broadcast 192.168.1.255"
16 routes_eth0="
17 default via 192.168.1.1 metric 20
18 192.168.1.240/28 via 192.168.1.1 metric 0"
19
20 ...for my machine 192.168.1.249. Can I have something like...
21
22 mtu_eth0="1466"
23 config_eth0="
24 192.168.1.249/24 broadcast 192.168.1.255
25 192.168.10.249/24 broadcast 192.168.1.255"
26 routes_eth0="
27 default via 192.168.1.1 metric 20
28 192.168.1.240/28 via 192.168.1.1 metric 0"
29
30 ... and how would I tweak the last two lines to work without changes
31 each time I switch between VDSL (192.168.1.1) and cable (192.168.10.1) ?
32
33 --
34 Walter Dnes <waltdnes@××××××××.org>
35 I don't run "desktop environments"; I run useful applications

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