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Date:      Sat, 14 Apr 2007 01:39:05 +0000
From:      Drew <cotharyus@gmail.com>
To:        "Bill Moran" <wmoran@potentialtech.com>
Cc:        questions@freebsd.org
Subject:   Re: Complete loss of network on 6_STABLE
Message-ID:  <715841970704131839m3a414f95pf15e200542b9582f@mail.gmail.com>
In-Reply-To: <20070413210308.00ae1eb9.wmoran@potentialtech.com>
References:  <715841970704121750g101c1b12m4f150b8d2871b80c@mail.gmail.com> <715841970704131752o1730f77gd5339b2552657609@mail.gmail.com> <20070413210308.00ae1eb9.wmoran@potentialtech.com>

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On 4/14/07, Bill Moran <wmoran@potentialtech.com> wrote:
>
> Drew <cotharyus@gmail.com> wrote:
> >
> > A little more on this, because now I am really stumped. I have taken
> known
> > good source, and moved it via CD to this machine. I rebuilt, and it
> exhibits
> > exactly the same behavior, with both my kernel, and GENERIC. Pinging an
> IP
> > on my lan results in ping: sendto: host is down. There are no active
> > firewalls on this machine. When I ping another IP on the network,
> activity
> > happens on the switch. I have swapped NIC's to a known working one from
> > another machine, and it behaves identically. I have changed ports on the
> > switch. About the only thing I haven't done is reinstall (which reminds
> me,
> > I have a Freesbie disc around here somewhere to try) - but I'd rather
> that
> > was a last resort. Meaning I'm open to any suggestions anyone might have
> > about this.
>
> I'm coming to this thread a little late, so I apologize if this
> information has already been passed around.
>
> Can you provide ifconfig -a, netstat -m, netstat -s, netstat -rn output
> on the troubled system.
>

ifconfig -a:
sis0: flags=8842<BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        ether 00:a0:cc:73:64:69
        media: Ethernet autoselect (100baseTX)
        status: active
nve0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.6 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:15:f2:7f:80:86
        media: Ethernet autoselect (100baseTX <half-duplex>)
        status: active
plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
        inet6 ::1 prefixlen 128

(note the sis0 has no configuration in the system we are talking about,
that's the working test card I installed, and what I'm using with Freesbie,
as it doesn't seem to know about the nve0)

netstat -m:
130/395/525 mbufs in use (current/cache/total)
128/146/274/25600 mbuf clusters in use (current/cache/total/max)
128/128 mbuf+clusters out of packet secondary zone in use (current/cache)
0/0/0/0 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/0 9k jumbo clusters in use (current/cache/total/max)
0/0/0/0 16k jumbo clusters in use (current/cache/total/max)
288K/390K/679K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/5/6656 sfbufs in use (current/peak/max)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
0 calls to protocol drain routines

netstat -s:
tcp:
        0 packets sent
                0 data packets (0 bytes)
                0 data packets (0 bytes) retransmitted
                0 data packets unnecessarily retransmitted
                0 resends initiated by MTU discovery
                0 ack-only packets (0 delayed)
                0 URG only packets
                0 window probe packets
                0 window update packets
                0 control packets
        3 packets received
                0 acks (for 0 bytes)
                0 duplicate acks
                0 acks for unsent data
                0 packets (0 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 connection requests
        0 connection accepts
        0 bad connection attempts
        0 listen queue overflows
        0 ignored RSTs in the windows
        0 connections established (including accepts)
        5 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
        0 segments updated rtt (of 0 attempts)
        0 retransmit timeouts
                0 connections dropped by rexmit timeout
        0 persist timeouts
                0 connections dropped by persist timeout
        0 keepalive timeouts
                0 keepalive probes sent
                0 connections dropped by keepalive
        0 correct ACK header predictions
        0 correct data packet header predictions
        0 syncache entries added
                0 retransmitted
                0 dupsyn
                0 dropped
                0 completed
                0 bucket overflow
                0 cache overflow
                0 reset
                0 stale
                0 aborted
                0 badack
                0 unreach
                0 zone failures
        0 cookies sent
        0 cookies received
        0 SACK recovery episodes
        0 segment rexmits in SACK recovery episodes
        0 byte rexmits in SACK recovery episodes
        0 SACK options (SACK blocks) received
        0 SACK options (SACK blocks) sent
        0 SACK scoreboard overflow
udp:
        9 datagrams received
        0 with incomplete header
        0 with bad data length field
        0 with bad checksum
        0 with no checksum
        4 dropped due to no socket
        0 broadcast/multicast datagrams dropped due to no socket
        0 dropped due to full socket buffers
        0 not for hashed pcb
        5 delivered
        36 datagrams output
ip:
        554 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
        12 packets for this host
        0 packets for unknown/unsupported protocol
        0 packets forwarded (0 packets fast forwarded)
        510 packets not forwardable
        32 packets received for unknown multicast group
        0 redirects sent
        46 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 tunneling packets that can't find gif
        0 datagrams with bad address in header
icmp:
        4 calls to icmp_error
        0 errors not generated in response to an icmp message
        Output histogram:
                destination unreachable: 4
        0 messages with bad code fields
        0 messages < minimum length
        0 bad checksums
        0 messages with bad length
        0 multicast echo requests ignored
        0 multicast timestamp requests ignored
        0 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 bad checksum
        0 membership queries received
        0 membership queries received with invalid field(s)
        0 membership reports received
        0 membership reports received with invalid field(s)
        0 membership reports received for groups to which we belong
        0 membership reports sent
ip6:
        0 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
        0 packets for this host
        0 packets forwarded
        0 packets not forwardable
        0 redirects sent
        6 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
        0 multicast packets which we don't join
        Mbuf statistics:
                0 one mbuf
              0 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
        0 forward cache hit
        0 forward cache miss
        Source addresses selection rule applied:
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:
                multicast listener report: 6
        0 messages with bad code fields
        0 messages < minimum length
        0 bad checksums
        0 messages with bad length
        Histogram of error messages to be generated:
                0 no route
                0 administratively prohibited
                            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
        0 message responses generated
        0 messages with too many ND options
        0 messages with bad ND options
        0 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 calcurations 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

netstat -rn:
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            192.168.1.4        UGS         0       10   nve0
192.168.1          link#2             UC          0        0   nve0
192.168.1.4        link#2             UHLW        2       36   nve0

Internet6:
Destination                       Gateway                       Flags
Netif
 Expire
::1                               ::1                           UHL
lo0
fe80::%lo0/64                     fe80::1%lo0                   U
lo0
fe80::1%lo0                       link#4                        UHL
lo0
ff01:4::/32                       fe80::1%lo0                   UC
lo0
ff02::%lo0/32                     fe80::1%lo0                   UC
lo0

Lots of copying and pasting. Let me know if you have any questions about
anything else, but I think I explained the only thing that looked strange
(so maybe if there's something else strange, that's my problem....)



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