On 2017-07-12 11:34, Martin Pieuchot wrote:
On 11/07/17(Tue) 13:55, Remi Locherer wrote:
On 2017-07-11 13:23, Remi Locherer wrote:
> On 2017-07-11 11:32, Martin Pieuchot wrote:
> > Hello and thanks for the detailed bug report.
> >
> > On 10/07/17(Mon) 17:52, Remi Locherer wrote:
> > > >Synopsis: ifconfig carpX a.b.c.d -> arpresolve: route contains no arp
information
> > > >Category: kernel
> > > >Environment:
> > > System : OpenBSD 6.1
> > > Details : OpenBSD 6.1 (GENERIC.MP) #20: Sat Apr 1 13:45:56
> > > MDT 2017
> > >
> > > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> > >
> > > Architecture: OpenBSD.amd64
> > > Machine : amd64
> > >
> > > >Description:
> > > After reconfiguring an existing carp interface with the same ip
> > > the gateway stops forwarding traffic (forwarding to directly
> > > connected hosts still works).
> > > In /var/log/messages this can be found:
> > >
> > > Jul 10 12:54:27 gw1 /bsd: arpresolve: 10.0.20.10: route contains
> > > no arp information
> >
> > How does the routing table looks like when you see such message? And
> > the ARP table?
Somehow a route attached to vio2 is removed from the routing table when
you modify carp2.
Could you run 'route monitor' then do 'ifconfig carp2 delete'? This
should hopefully reproduce the problem and the output of 'route
monitor'
will give us more infos.
This is the output captured on 6.1-stable:
gw1# route monitor
got message of size 144 on Wed Jul 12 16:02:07 2017
RTM_DELETE: Delete Route: len 144, priority 3, table 0, ifidx 3, pid: 0,
seq 0, errno 0
flags:<UP,HOST,DONE,LLINFO,CLONED,CACHED>
fmask:
use: 0 mtu: 0 expire: 0
locks: inits:
sockaddrs: <DST,GATEWAY>
10.0.20.10 08:00:27:6b:9a:c1
got message of size 192 on Wed Jul 12 16:02:07 2017
RTM_DELETE: Delete Route: len 192, priority 19, table 0, ifidx 7, pid:
0, seq 0, errno 0
flags:<DONE,CLONING,CONNECTED>
fmask:
use: 0 mtu: 0 expire: 0
locks: inits:
sockaddrs: <DST,GATEWAY,NETMASK,IFP,IFA>
10.0.20.0 10.0.20.1 255.255.255.0 00:00:5e:00:01:17 10.0.20.1
got message of size 176 on Wed Jul 12 16:02:07 2017
RTM_DELETE: Delete Route: len 176, priority 1, table 0, ifidx 7, pid: 0,
seq 0, errno 0
flags:<HOST,DONE,BROADCAST>
fmask:
use: 0 mtu: 0 expire: 0
locks: inits:
sockaddrs: <DST,GATEWAY,IFP,IFA>
10.0.20.255 10.0.20.1 00:00:5e:00:01:17 10.0.20.1
got message of size 192 on Wed Jul 12 16:02:07 2017
RTM_DELETE: Delete Route: len 192, priority 1, table 0, ifidx 7, pid: 0,
seq 0, errno 0
flags:<HOST,DONE,LOCAL>
fmask:
use: 0 mtu: 0 expire: 0
locks: inits:
sockaddrs: <DST,GATEWAY,IFP,IFA>
10.0.20.1 00:00:5e:00:01:17 00:00:5e:00:01:17 10.0.20.1
got message of size 96 on Wed Jul 12 16:02:07 2017
RTM_DELADDR: address being removed from iface: len 96, metric 0, flags:
sockaddrs: <NETMASK,IFP,IFA,BRD>
255.255.255.0 00:00:5e:00:01:17 10.0.20.1 10.0.20.255
got message of size 168 on Wed Jul 12 16:02:08 2017
RTM_IFINFO: iface status change: len 168, if# 7, name: carp2, link:
invalid, mtu: 1500, flags:<BROADCAST,SIMPLEX,MULTICAST>
