Date: Thu, 10 Dec 2009 19:22:57 -0800 From: "Li, Qing" <qing.li@bluecoat.com> To: "Tom Pusateri" <pusateri@bangj.com>, <freebsd-stable@freebsd.org> Subject: RE: IPv6 - bad neighbor solicitation messages Message-ID: <B583FBF374231F4A89607B4D08578A430467374E@bcs-mail03.internal.cacheflow.com> References: <3E18B7A0-9391-47A2-B52D-24E44DDF1A33@bangj.com>
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I haven't made any significant changes in the IPv6 code
for 3 months now. Could you please get a packet capture and=20
email it to me?
=20
Thanks,
=20
-- Qing
________________________________
From: owner-freebsd-stable@freebsd.org on behalf of Tom Pusateri
Sent: Thu 12/10/2009 7:15 PM
To: freebsd-stable@freebsd.org
Subject: IPv6 - bad neighbor solicitation messages
I'm having intermittent IPv6 issues on one FreeBSD 8-stable box.
I've tried to ping6 the FreeBSD-8 stable (crag) (as of 12/9/09) from =
snow leopard (glow) and from a freebsd 7.2 box (gw).
I've tried replacing the fxp0 interface in the FreeBSD-8 stable box with =
an em0 interface and it works with the FreeBSD 7.2 box but the same =
problem from the Snow Leopard box.
The bad neighbor solicitation messages keep increasing with the IPv6 =
pings.
Any other thing I can collect to troubleshoot?
Thanks,
Tom
glow pusateri$ ping6 crag
PING6(56=3D40+8+8 bytes) 2610:28:1800:4001:225:ff:fef1:7305 --> =
2610:28:1800:4001:20e:cff:fe9f:faad
Request timeout for icmp_seq=3D0
Request timeout for icmp_seq=3D1
Request timeout for icmp_seq=3D2
Request timeout for icmp_seq=3D3
16 bytes from 2610:28:1800:4001:20e:cff:fe9f:faad, icmp_seq=3D4 =
hlim=3D63 time=3D0.784 ms
Request timeout for icmp_seq=3D5
Request timeout for icmp_seq=3D6
Request timeout for icmp_seq=3D7
Request timeout for icmp_seq=3D8
16 bytes from 2610:28:1800:4001:20e:cff:fe9f:faad, icmp_seq=3D9 =
hlim=3D63 time=3D0.633 ms
Request timeout for icmp_seq=3D10
Request timeout for icmp_seq=3D11
Request timeout for icmp_seq=3D12
Request timeout for icmp_seq=3D13
16 bytes from 2610:28:1800:4001:20e:cff:fe9f:faad, icmp_seq=3D14 =
hlim=3D63 time=3D0.654 ms
Request timeout for icmp_seq=3D15
^C
--- crag.foo.com ping6 statistics ---
17 packets transmitted, 3 packets received, 82.4% packet loss
round-trip min/avg/max/std-dev =3D 0.633/0.690/0.784/0.067 ms
tcp:
153 packets sent
146 data packets (31776 bytes)
3 data packets (240 bytes) retransmitted
1 data packet unnecessarily retransmitted
0 resends initiated by MTU discovery
4 ack-only packets (2 delayed)
0 URG only packets
0 window probe packets
0 window update packets
0 control packets
196 packets received
137 acks (for 31777 bytes)
6 duplicate acks
0 acks for unsent data
52 packets (4277 bytes) received in-sequence
0 completely duplicate packets (0 bytes)
0 old duplicate packets
0 packets with some dup. data (0 bytes duped)
0 out-of-order packets (0 bytes)
0 packets (0 bytes) of data after window
0 window probes
0 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
0 discarded due to memory problems
0 connection requests
1 connection accept
0 bad connection attempts
0 listen queue overflows
0 ignored RSTs in the windows
1 connection established (including accepts)
4 connections closed (including 0 drops)
0 connections updated cached RTT on close
0 connections updated cached RTT variance on close
0 connections updated cached ssthresh on close
0 embryonic connections dropped
137 segments updated rtt (of 73 attempts)
2 retransmit timeouts
0 connections dropped by rexmit timeout
0 persist timeouts
0 connections dropped by persist timeout
0 Connections (fin_wait_2) dropped because of timeout
0 keepalive timeouts
0 keepalive probes sent
0 connections dropped by keepalive
0 correct ACK header predictions
50 correct data packet header predictions
1 syncache entry added
0 retransmitted
1 dupsyn
0 dropped
1 completed
0 bucket overflow
0 cache overflow
0 reset
0 stale
0 aborted
0 badack
0 unreach
0 zone failures
1 cookie sent
0 cookies received
1 SACK recovery episode
1 segment rexmit in SACK recovery episodes
48 byte rexmits in SACK recovery episodes
7 SACK options (SACK blocks) received
0 SACK options (SACK blocks) sent
0 SACK scoreboard overflow
0 packets with ECN CE bit set
0 packets with ECN ECT(0) bit set
0 packets with ECN ECT(1) bit set
0 successful ECN handshakes
0 times ECN reduced the congestion window
udp:
169 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
0 with no checksum
1 dropped due to no socket
23 broadcast/multicast datagrams undelivered
0 dropped due to full socket buffers
0 not for hashed pcb
145 delivered
134 datagrams output
0 times multicast source filter matched
sctp:
0 input packets
0 datagrams
0 packets that had data
0 input SACK chunks
0 input DATA chunks
0 duplicate DATA chunks
0 input HB chunks
0 HB-ACK chunks
0 input ECNE chunks
0 input AUTH chunks
0 chunks missing AUTH
0 invalid HMAC ids received
0 invalid secret ids received
0 auth failed
0 fast path receives all one chunk
0 fast path multi-part data
0 output packets
0 output SACKs
0 output DATA chunks
0 retransmitted DATA chunks
0 fast retransmitted DATA chunks
0 FR's that happened more than once to same chunk
0 intput HB chunks
0 output ECNE chunks
0 output AUTH chunks
0 ip_output error counter
Packet drop statistics:
0 from middle box
0 from end host
0 with data
0 non-data, non-endhost
0 non-endhost, bandwidth rep only
0 not enough for chunk header
0 not enough data to confirm
0 where process_chunk_drop said break
0 failed to find TSN
0 attempt reverse TSN lookup
0 e-host confirms zero-rwnd
0 midbox confirms no space
0 data did not match TSN
0 TSN's marked for Fast Retran
Timeouts:
5 iterator timers fired
0 T3 data time outs
0 window probe (T3) timers fired
0 INIT timers fired
0 sack timers fired
0 shutdown timers fired
0 heartbeat timers fired
0 a cookie timeout fired
0 an endpoint changed its cookiesecret
0 PMTU timers fired
0 shutdown ack timers fired
0 shutdown guard timers fired
0 stream reset timers fired
0 early FR timers fired
0 an asconf timer fired
0 auto close timer fired
0 asoc free timers expired
0 inp free timers expired
0 packet shorter than header
0 checksum error
0 no endpoint for port
0 bad v-tag
0 bad SID
0 no memory
0 number of multiple FR in a RTT window
0 RFC813 allowed sending
0 RFC813 does not allow sending
0 times max burst prohibited sending
0 look ahead tells us no memory in interface
0 numbers of window probes sent
0 times an output error to clamp down on next user send
0 times sctp_senderrors were caused from a user
0 number of in data drops due to chunk limit reached
0 number of in data drops due to rwnd limit reached
0 times a ECN reduced the cwnd
0 used express lookup via vtag
0 collision in express lookup
0 times the sender ran dry of user data on primary
0 same for above
0 sacks the slow way
0 window update only sacks sent
0 sends with sinfo_flags !=3D0
0 unordered sends
0 sends with EOF flag set
0 sends with ABORT flag set
0 times protocol drain called
0 times we did a protocol drain
0 times recv was called with peek
0 cached chunks used
0 cached stream oq's used
0 unread messages abandonded by close
0 send burst avoidance, already max burst inflight to net
0 send cwnd full avoidance, already max burst inflight to net
0 number of map array over-runs via fwd-tsn's
ip:
333 total packets received
0 bad header checksums
0 with size smaller than minimum
0 with data size < data length
0 with ip length > max ip packet size
0 with header length < data size
0 with data length < header length
0 with bad options
0 with incorrect version number
0 fragments received
0 fragments dropped (dup or out of space)
0 fragments dropped after timeout
0 packets reassembled ok
329 packets for this host
0 packets for unknown/unsupported protocol
0 packets forwarded (0 packets fast forwarded)
4 packets not forwardable
0 packets received for unknown multicast group
0 redirects sent
258 packets sent from this host
1 packet sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
0 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can't be fragmented
0 tunneling packets that can't find gif
0 datagrams with bad address in header
icmp:
1 call to icmp_error
0 errors not generated in response to an icmp message
Output histogram:
echo reply: 8
destination unreachable: 1
0 messages with bad code fields
0 messages less than the minimum length
0 messages with bad checksum
0 messages with bad length
0 multicast echo requests ignored
0 multicast timestamp requests ignored
Input histogram:
echo reply: 2
echo: 8
8 message responses generated
0 invalid return addresses
0 no return routes
ICMP address mask responses are disabled
igmp:
0 messages received
0 messages received with too few bytes
0 messages received with wrong TTL
0 messages received with bad checksum
0 V1/V2 membership queries received
0 V3 membership queries received
0 membership queries received with invalid field(s)
0 general queries received
0 group queries received
0 group-source queries received
0 group-source queries dropped
0 membership reports received
0 membership reports received with invalid field(s)
0 membership reports received for groups to which we belong
0 V3 reports received without Router Alert
2 membership reports sent
ip6:
185 total packets received
0 with size smaller than minimum
0 with data size < data length
0 with bad options
0 with incorrect version number
0 fragments received
0 fragments dropped (dup or out of space)
0 fragments dropped after timeout
0 fragments that exceeded limit
0 packets reassembled ok
53 packets for this host
0 packets forwarded
0 packets not forwardable
0 redirects sent
118 packets sent from this host
0 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
0 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can't be fragmented
0 packets that violated scope rules
3 multicast packets which we don't join
Input histogram:
UDP: 46
ICMP6: 139
Mbuf statistics:
29 one mbuf
two or more mbuf:
lo0=3D 24
132 one ext mbuf
0 two or more ext mbuf
0 packets whose headers are not continuous
0 tunneling packets that can't find gif
0 packets discarded because of too many headers
0 failures of source address selection
Source addresses selection rule applied:
43 first candidate
5 same address
35 appropriate scope
icmp6:
0 calls to icmp6_error
0 errors not generated in response to an icmp6 message
0 errors not generated because of rate limitation
Output histogram:
echo: 4
echo reply: 21
router solicitation: 3
neighbor solicitation: 6
neighbor advertisement: 30
MLDv2 listener report: 12
0 messages with bad code fields
0 messages < minimum length
0 bad checksums
0 messages with bad length
Input histogram:
echo: 21
echo reply: 4
router advertisement: 14
neighbor solicitation: 69
neighbor advertisement: 3
redirect: 25
Histogram of error messages to be generated:
0 no route
0 administratively prohibited
0 beyond scope
0 address unreachable
0 port unreachable
0 packet too big
0 time exceed transit
0 time exceed reassembly
0 erroneous header field
0 unrecognized next header
0 unrecognized option
0 redirect
0 unknown
21 message responses generated
0 messages with too many ND options
0 messages with bad ND options
39 bad neighbor solicitation messages
0 bad neighbor advertisement messages
0 bad router solicitation messages
0 bad router advertisement messages
0 bad redirect messages
0 path MTU changes
rip6:
0 messages received
0 checksum calculations on inbound
0 messages with bad checksum
0 messages dropped due to no socket
0 multicast messages dropped due to no socket
0 messages dropped due to full socket buffers
0 delivered
0 datagrams output
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