This issue appears to have been introduced with FC17 as it was working
properly with FC16.
Basically, when listing SCTP associations via netstat (i.e. "netstat
--sctp"), an error is displayed (see below). Servers appear to be listed
without issue - although that could just be due to the specific parameters
of my application. In any case, the servers and associations appear to be
listed properly in /proc/net/sctp/eps and /proc/net/sctp/assocs, so
presumably (?) the issue is just with netstat's interpretation of the data
in /proc.
Example:
After starting an SCTP server:
the netstat output is correct:
[peter@peter ~]$ netstat -nap --sctp
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
PID/Program name
sctp 0 0 10.91.20.100:4105 0.0.0.0:* LISTEN
1602/server
and it matches that in /proc:
[peter@peter ~]$ cat /proc/net/sctp/eps
ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS
ffff880222fdac00 ffff880221d504c0 2 10 9 4105 1000 27667
10.91.20.100 10.91.10.100
[peter@peter ~]$ cat /proc/net/sctp/assocs
ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE
LPORT RPORT LADDRS <-> RADDRS HBINT INS OUTS MAXRT T1X T2X RTXC
Whereas after an association is established by a client:
the netstat output reports an error where the two client lines would
normally be output (2 lines due to 2 addresses on client side of
association):
[peter@peter ~]$ netstat -nap --sctp
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
PID/Program name
sctp 0 0 10.91.20.100:4105 0.0.0.0:* LISTEN
1602/server
SCTP error in line: 1
SCTP error in line: 2
the server entry matches that in /proc:
[peter@peter ~]$ cat /proc/net/sctp/eps
ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS
ffff880222fdac00 ffff880221d504c0 2 10 9 4105 1000 27667
10.91.20.100 10.91.10.100
and the client entries are also reported in /proc:
[peter@peter ~]$ cat /proc/net/sctp/assocs
ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE
LPORT RPORT LADDRS <-> RADDRS HBINT INS OUTS MAXRT T1X T2X RTXC
ffff880223e51000 ffff880222fd0000 2 1 3 6426 8 0 0
1000 10777 4105 4106 10.91.20.100 10.91.10.100 <-> *10.91.0.100 30000
10 10 1 0 0 0
ffff880223e56800 ffff880221d50980 2 1 3 6681 7 0 0
1000 27692 4106 4105 10.91.0.100 <-> *10.91.20.100 10.91.10.100 30000
10 10 59885 0 0 0
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