FC17 netstat does not report SCTP associations properly
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