Date: Fri, 20 Jun 2014 07:45:54 -0500 From: Larry Rosenman <ler@lerctr.org> To: Hiroki Sato <hrs@freebsd.org> Cc: freebsd-net@freebsd.org Subject: Re: IPv6: "xxx::x already configured" in logs... =?UTF-8?Q?why=3F?= Message-ID: <0c5bc901eba87f35e58390b686cee5ab@thebighonker.lerctr.org> In-Reply-To: <20140620.130812.1612764660960146940.hrs@allbsd.org> References: <20140612202349.GA65079@thebighonker.lerctr.org> <20140619.181129.1279477227287764712.hrs@allbsd.org> <20140619140801.GA65420@thebighonker.lerctr.org> <20140620.130812.1612764660960146940.hrs@allbsd.org>
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On 2014-06-19 23:08, Hiroki Sato wrote:
> Larry Rosenman <ler@lerctr.org> wrote
> in <20140619140801.GA65420@thebighonker.lerctr.org>:
>
> le> > le> Ideas? (I may be an idiot, so any criticism welcomed).
> le> > le>
> le> > le> if you need the 1841's config, I can supply that as well.
> It's using a Hurricane
> le> > le> electric Tunnel.
> le> >
> le> > How frequent were the log message added into /var/log/messages?
> And
> le> > when did it start to happen after boot. Just after lagg0 is
> le> > configured?
> le> >
> le> > -- Hiroki
> le> Looks like:
> le>
> le> Jun 12 07:00:01 thebighonker kernel: in6_ifadd:
> 2001:470:1f0f:3ad:223:7dff:fe9e:6e8a is already configured
>
> Thank you. Three more questions:
>
> 1. output of "ifconfig lagg0", "ifconfig bce0", and "ifconfig bce1".
>
> 2. output of "netstat -s -i".
>
> 3. output of "ndp -p".
>
> The cause of the message is that the automatically-configured address
> is not recognized as "configured" one and FreeBSD IPv6 stack is
> trying to add it every time a Router Advertisement message is
> received. I am still not sure why it happened, but the above three
> would help for further investigation.
>
> -- Hiroki
I updated the system from r267121M to r267653M and rebooted. The issue
does NOT occur at this level.
thebighonker.lerctr.org /etc/rc.d $ ifconfig lagg0
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>
ether 00:23:7d:9e:6e:8a
inet 192.147.25.65 netmask 0xffffff00 broadcast 192.147.25.255
inet6 fe80::223:7dff:fe9e:6e8a%lagg0 prefixlen 64 scopeid 0x4
inet 192.147.25.45 netmask 0xffffff00 broadcast 192.147.25.255
inet 192.147.25.11 netmask 0xffffff00 broadcast 192.147.25.255
inet 192.147.25.66 netmask 0xffffff00 broadcast 192.147.25.255
inet6 2001:470:1f0f:3ad:223:7dff:fe9e:6e8a prefixlen 64 autoconf
nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
laggproto loadbalance lagghash l2,l3,l4
laggport: bce1 flags=4<ACTIVE>
laggport: bce0 flags=4<ACTIVE>
thebighonker.lerctr.org /etc/rc.d $ ifconfig bce0
bce0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>
ether 00:23:7d:9e:6e:8a
inet6 fe80::223:7dff:fe9e:6e8a%bce0 prefixlen 64 tentative scopeid 0x1
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
thebighonker.lerctr.org /etc/rc.d $ ifconfig bce1
bce1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>
ether 00:23:7d:9e:6e:8a
inet6 fe80::223:7dff:fe9e:6e8a%bce1 prefixlen 64 tentative scopeid 0x2
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
thebighonker.lerctr.org /etc/rc.d $
thebighonker.lerctr.org /etc/rc.d $ netstat -s -i
ip6 on bce0:
0 total input datagrams
0 datagrams with invalid header received
0 datagrams exceeded MTU received
0 datagrams with no route received
0 datagrams with invalid dst received
0 datagrams with unknown proto received
0 truncated datagrams received
0 input datagrams discarded
0 datagrams delivered to an upper layer protocol
0 datagrams forwarded to this interface
4 datagrams sent from an upper layer protocol
0 total discarded output datagrams
0 output datagrams fragmented
0 output datagrams failed on fragment
0 output datagrams succeeded on fragment
0 incoming datagrams fragmented
0 datagrams reassembled
0 datagrams failed on reassembly
0 multicast datagrams received
4 multicast datagrams sent
ip6 on bce1:
0 total input datagrams
0 datagrams with invalid header received
0 datagrams exceeded MTU received
0 datagrams with no route received
0 datagrams with invalid dst received
0 datagrams with unknown proto received
0 truncated datagrams received
0 input datagrams discarded
0 datagrams delivered to an upper layer protocol
0 datagrams forwarded to this interface
4 datagrams sent from an upper layer protocol
0 total discarded output datagrams
0 output datagrams fragmented
0 output datagrams failed on fragment
0 output datagrams succeeded on fragment
0 incoming datagrams fragmented
0 datagrams reassembled
0 datagrams failed on reassembly
0 multicast datagrams received
4 multicast datagrams sent
ip6 on lo0:
45224 total input datagrams
0 datagrams with invalid header received
0 datagrams exceeded MTU received
0 datagrams with no route received
0 datagrams with invalid dst received
0 datagrams with unknown proto received
0 truncated datagrams received
0 input datagrams discarded
45224 datagrams delivered to an upper layer protocol
0 datagrams forwarded to this interface
45224 datagrams sent from an upper layer protocol
0 total discarded output datagrams
0 output datagrams fragmented
0 output datagrams failed on fragment
0 output datagrams succeeded on fragment
0 incoming datagrams fragmented
0 datagrams reassembled
0 datagrams failed on reassembly
0 multicast datagrams received
0 multicast datagrams sent
ip6 on lagg0:
66698 total input datagrams
0 datagrams with invalid header received
0 datagrams exceeded MTU received
0 datagrams with no route received
0 datagrams with invalid dst received
0 datagrams with unknown proto received
0 truncated datagrams received
1 input datagram discarded
66698 datagrams delivered to an upper layer protocol
0 datagrams forwarded to this interface
70844 datagrams sent from an upper layer protocol
0 total discarded output datagrams
1505 output datagrams fragmented
0 output datagrams failed on fragment
3037 output datagrams succeeded on fragment
477 incoming datagrams fragmented
224 datagrams reassembled
0 datagrams failed on reassembly
498 multicast datagrams received
3 multicast datagrams sent
icmp6 on bce0:
0 total input messages
0 total input error messages
0 input destination unreachable errors
0 input administratively prohibited errors
0 input time exceeded errors
0 input parameter problem errors
0 input packet too big errors
0 input echo requests
0 input echo replies
0 input router solicitations
0 input router advertisements
0 input neighbor solicitations
0 input neighbor advertisements
0 input redirects
0 input MLD queries
0 input MLD reports
0 input MLD dones
0 total output messages
0 total output error messages
0 output destination unreachable errors
0 output administratively prohibited errors
0 output time exceeded errors
0 output parameter problem errors
0 output packet too big errors
0 output echo requests
0 output echo replies
0 output router solicitations
0 output router advertisements
0 output neighbor solicitations
0 output neighbor advertisements
0 output redirects
0 output MLD queries
0 output MLD reports
0 output MLD dones
icmp6 on bce1:
0 total input messages
0 total input error messages
0 input destination unreachable errors
0 input administratively prohibited errors
0 input time exceeded errors
0 input parameter problem errors
0 input packet too big errors
0 input echo requests
0 input echo replies
0 input router solicitations
0 input router advertisements
0 input neighbor solicitations
0 input neighbor advertisements
0 input redirects
0 input MLD queries
0 input MLD reports
0 input MLD dones
0 total output messages
0 total output error messages
0 output destination unreachable errors
0 output administratively prohibited errors
0 output time exceeded errors
0 output parameter problem errors
0 output packet too big errors
0 output echo requests
0 output echo replies
0 output router solicitations
0 output router advertisements
0 output neighbor solicitations
0 output neighbor advertisements
0 output redirects
0 output MLD queries
0 output MLD reports
0 output MLD dones
icmp6 on lo0:
4 total input messages
4 total input error messages
4 input destination unreachable errors
0 input administratively prohibited errors
0 input time exceeded errors
0 input parameter problem errors
0 input packet too big errors
0 input echo requests
0 input echo replies
0 input router solicitations
0 input router advertisements
0 input neighbor solicitations
0 input neighbor advertisements
0 input redirects
0 input MLD queries
0 input MLD reports
0 input MLD dones
4 total output messages
4 total output error messages
4 output destination unreachable errors
0 output administratively prohibited errors
0 output time exceeded errors
0 output parameter problem errors
0 output packet too big errors
0 output echo requests
0 output echo replies
0 output router solicitations
0 output router advertisements
0 output neighbor solicitations
0 output neighbor advertisements
0 output redirects
0 output MLD queries
0 output MLD reports
0 output MLD dones
icmp6 on lagg0:
3475 total input messages
10 total input error messages
0 input destination unreachable errors
0 input administratively prohibited errors
0 input time exceeded errors
0 input parameter problem errors
10 input packet too big errors
0 input echo requests
6 input echo replies
0 input router solicitations
495 input router advertisements
1895 input neighbor solicitations
1069 input neighbor advertisements
0 input redirects
0 input MLD queries
0 input MLD reports
0 input MLD dones
2994 total output messages
22 total output error messages
22 output destination unreachable errors
0 output administratively prohibited errors
0 output time exceeded errors
0 output parameter problem errors
0 output packet too big errors
6 output echo requests
0 output echo replies
1 output router solicitation
0 output router advertisements
1069 output neighbor solicitations
1895 output neighbor advertisements
0 output redirects
0 output MLD queries
1 output MLD report
0 output MLD dones
thebighonker.lerctr.org /etc/rc.d $
thebighonker.lerctr.org /etc/rc.d $ ndp -p
2001:470:1f0f:3ad::/64 if=lagg0
flags=LAO vltime=2592000, pltime=604800, expire=29d23h57m21s, ref=1
advertised by
fe80::218:18ff:fe72:488%lagg0 (reachable)
fe80::%lagg0/64 if=lagg0
flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0
No advertising router
fe80::%bce1/64 if=bce1
flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0
No advertising router
fe80::%bce0/64 if=bce0
flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0
No advertising router
fe80::%lo0/64 if=lo0
flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0
No advertising router
thebighonker.lerctr.org /etc/rc.d $
The local mods are Karl Denninger's ZFS ARC patch.
So, I'm not sure what to say at this point.
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 214-642-9640 (c) E-Mail: ler@lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688
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