Re: What's changing the default route?

On Sun, Jul 02, 2017 at 08:27:36AM +0000, Stuart Henderson wrote:
> On 2017-07-01, Claudio Jeker <cjeker@diehard.n-r-g.com> wrote:
> > On Sat, Jul 01, 2017 at 04:48:05PM +0200, tonypony76@mail.com wrote:
> >> I use an ssh tunnel for a VPN on OpenBSD 6.1. To initiate the VPN
> >> connection, I type the following on the local machine
> >>
> >> # ssh -f -w 0:1 R true
> >> # ifconfig tun0 10.1.1.1 10.1.1.2 netmask 255.255.255.252
> >> # route add R G
> >> # route change default 10.1.1.2
> >>
> >> where R is the IP address of the remote server, and where G is the IP
> >> address of the local gateway.
> >>
> >> Usually, this works well. But I occasionally have a problem where the
> >> default address in the routing table will spontaneously change from
> >> 10.1.1.2 to G. What could be causing the routing table to spontaneously
> >> change in this manner without my intervention?
> >>
> >
> > Most probably dhclient(8).
>
> A hackish workaround to this would be to add routes for 0.0.0.0/1
> and 128.0.0.0/1 instead of changing the default route.
>

Or even better use the -priority and add it with a lower prio (e.g. 2).

--
:wq Claudio