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    SubjectRe: [bug] stuck localhost TCP connections, v2.6.26-rc3+

    * Ingo Molnar <mingo@elte.hu> wrote:

    > i also ran this for 15 minutes:
    >
    > [root@europe ~]# tcpdump src and dst 10.0.1.15 -n
    > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
    > listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
    >
    > but there was no output at all - i.e. TCP has not attempted to do
    > anything to these connections.

    ... which is not surprising as it traced eth0 ;-) [10.0.1.15 is the IP
    of the box and routes back to loopback]

    with the proper tcpdump it gave:

    [root@europe ~]# tcpdump -i lo
    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
    listening on lo, link-type EN10MB (Ethernet), capture size 96 bytes
    16:15:05.260000 IP europe.37198 > europe.distcc: . ack 2022529163 win 257 <nop,nop,timestamp 209526 197526>
    16:15:05.260000 IP europe.distcc > europe.37198: . ack 1 win 0 <nop,nop,timestamp 209526 7020>

    hm, a window of 257 and zero, is that right?

    Ingo


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