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Date: Sun, 19 Dec 2010 21:42:30 -0800 (PST) From: David Miller <davem@...emloft.net> To: greearb@...delatech.com Cc: netdev@...r.kernel.org, therbert@...gle.com Subject: Re: ip rule and/or route problem in 2.6.37-rc5+ From: Ben Greear <greearb@...delatech.com> Date: Thu, 09 Dec 2010 22:19:06 -0800 > On 12/09/2010 05:06 PM, Ben Greear wrote: >> >> This problem appears to have happened between 2.6.36.1 and 2.6.37-rc2. >> We haven't fully bisected the problem yet. >> >> >> The basic test: >> >> * one normal interface using DHCP >> * A second interface specified to use it's own routing table. >> * 'ip rules' to determine behaviour. >> >> After running these commands abelow, the system can no longer >> route out it's normal interface. It appears that the final line >> is the one that messes things up. If you flush table 10001 after >> that, things start working again. >> >> The 'pref 20' rule is also important. It should not have >> any affect on this ping, but it appears that it does, somehow. >> If you remove it, the problem also goes away, regardless of >> the routes in table 10001. >> >> >> ip rule add pref 512 lookup local >> ip rule del pref 0 lookup local >> ip link set eth2 up >> ip -4 addr add 172.16.0.102/24 broadcast 172.16.0.255 dev eth2 >> ip rule add to 172.16.0.102 iif eth2 lookup local pref 10 >> ip rule add iif eth2 lookup 10001 pref 20 >> ip route add 172.16.0.0/24 dev eth2 table 10001 >> ip route add unreachable 0/0 table 10001 > > Seems this is the commit that broke this behaviour: > > 4465b469008bc03b98a1b8df4e9ae501b6c69d4b is first bad commit > commit 4465b469008bc03b98a1b8df4e9ae501b6c69d4b > Author: Tom Herbert <therbert@...gle.com> > Date: Sun May 23 19:54:12 2010 +0000 > > ipv4: Allow configuring subnets as local addresses Tom, please acknowledge this regression you've added to the tree. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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