[lug] SIOCADDRT in network startup
nate at natetech.com
Wed Feb 28 02:59:49 MST 2001
And the SIOCADDRT: Network is unreachable is usually a sign that you
have unnecessary cruft left over from a 2.0.x kernel for starting your
network if your network is working properly.
Trying to dig back here in the grey matter this early in the morning is
painful, but it seems to me the 2.2 kernels automatically do their route
add for the local network or they do it differently than the 2.0 kernels
did. Many distros didn't clean up the old stuff during "upgrades" to
the next kernel.
How old is the box, could that be it? Was it upgraded?
I'm sorry I can't remember the details right now... and I've done a
bunch of web searches trying to remember what the details were...
Nate Duehr, nate at natetech.com
"D. Stimits" wrote:
> Erick Bodine wrote:
> > I see the following in /var/log/messages whenever I reboot or restart networking. Though it says that the network is unreachable, I can telnet, ftp, ping, etc. to and from that box. What gives?
> > Feb 27 16:47:32 ilgc1 network: Shutting down interface eth0 succeeded
> > Feb 27 16:47:32 ilgc1 sysctl: net.ipv4.ip_forward = 0
> > Feb 27 16:47:32 ilgc1 sysctl: net.ipv4.conf.all.rp_filter = 1
> > Feb 27 16:47:32 ilgc1 sysctl: net.ipv4.ip_always_defrag = 0
> > Feb 27 16:47:32 ilgc1 sysctl: kernel.sysrq = 0
> > Feb 27 16:47:32 ilgc1 network: Setting network parameters succeeded
> > Feb 27 16:47:32 ilgc1 ifup: SIOCADDRT: Network is unreachable
> > Feb 27 16:47:32 ilgc1 network: Bringing up interface lo succeeded
> > Feb 27 16:47:32 ilgc1 network: Bringing up interface eth0 succeeded
> > Erick Bodine
> > Xpedite Systems Inc
> > Boulder, CO
> Those options (from /etc/sysctl.conf usually) require kernel support to
> work. The rp_filter and defrag, so on, look correct. I'd guess your
> kernel doesn't support them.
> D. Stimits, stimits at idcomm.com
> Web Page: http://lug.boulder.co.us
> Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
More information about the LUG