[Supervisor-users] failed to open inet_http_server

[ck g]

i use supervisord to control my app running on centos5.3. it worked fine.
but an error occured today. something like "failed to open inet_http_server,
socket.error -3".
i suspect this may have something to do with my ipv6 address.  my config
file is:

    [inet_http_server]         ; inet (TCP) server disabled by default
    port=*:9001        ; (ip_address:port specifier, *:port for all iface)

then i change it to be:
    [inet_http_server]         ; inet (TCP) server disabled by default
    port=192.168.21.101:9001        ; (ip_address:port specifier, *:port for
all iface)
where 192.168.21.101 is this server's ipv4 address.

Then it works again. but when i do same thing in my another centos server,
with ipv6 address and  port=*:9001 , the error not come out and the
supervisord work fine.

i want to know  when would this happen? Does the http_server conflict with
ipv6 address?
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