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Posted by Robert Redelmeier on September 13, 2006, 4:32 pm
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> My LANs have a route to the Internet thru a box running
> SuSE 10.1. It has a FiOS connection (Verizon) and a cable
> connection (Comcast). I can statically configure this such
> that the cable connection, which is slower, has a higher
> metric. And by setting /proc/sys/net/ipv4/route/gc_timeout
> to a low value, I have a quick automatic fallback.
> That's all fine so far, but the Comcast connection gets its
> IP via DHCP, and I'm running dhclient. So the question is
> about the best way to assign the higher metric to this
> route automatically upon startup (reboot, whatever).
> There appears to be no provision for this in dhclient.conf.
Find the script (under /etc/rc.d -- good luck with
SysV mess'o'symlinks!) that runs dhclient and add
ifconfig eth1 metric 4
after the dhclient invocation or to some rc.local script.
It should persist though dhclient changes and eth1 up/down .
I like to think of dhclient and friends as nothing more than
script daemons that do little more than `ifconfig` and `route`.
-- Robert
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