Date: Wed, 21 Aug 2013 12:13:54 -0600 From: Alan Somers <asomers@freebsd.org> To: "Sam Fourman Jr." <sfourman@gmail.com> Cc: freebsd-net@freebsd.org, Will Andrews <will@firepipe.net>, "Justin T. Gibbs" <gibbs@freebsd.org>, Alan Somers <asomers@freebsd.org> Subject: Re: CFR: FIB handling improvements Message-ID: <CAOtMX2jdhy8B48nXyZWs0GTFN2XhO65nUHUghV7%2BNry=Ckm04g@mail.gmail.com>
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On Wed, Aug 21, 2013 at 11:48 AM, Sam Fourman Jr. <sfourman@gmail.com>wrote: > > * Use of dhclient with non-zero FIBs. With this patch, it is possible > >> to use DHCP on a specific interface with a non-zero FIB and have it >> work correctly with this rc.conf snippet: >> >> ifconfig_em1="SYNCDHCP" >> dhclient_fib_em1=1 >> > > This patch is needed, I have a situation where we have > 2 internet providers, one is a static ip set in rc.conf, the other > provider forces > the use of DHCP, but trying to use the "DHCP" connection only for a > "Backup" > caused the problem of the primary gateway being overwritten on fib0 (the > static) > I tried to solve it by the following in /etc/rc.local: > > /usr/sbin/setfib 1 /sbin/dhclient re2 > setfib 0 route delete default > setfib 1 route delete default > setfib 1 route add default 99.55.240.1 > setfib 0 route add default 75.133.75.193 > > this sorta works, but in practice after several hours (not sure why) > all of the traffic on the machine tries to use the gateway of FIB1. > this problem ONLY shows up when the use of DHCP is in the mix. > > > So my question is twofold, is my situation what this patch is supposed to > fix? > or did I simply find a bug in the interface code? that will sort of eludes > to > > Thank you for your work > -- > > Sam Fourman Jr. > Yes, this patch will probably fix your problem. We regularly configure machines with static on igb0, dynamic on igb1, and separate gateways for each.
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