ipvsadm dumps core repeatedly

[John Mora <lvs@xxxxxxxxxxx>]

All -

I'm having some difficulty with ipvsadm and ipvs-0.9.16-2.2.17. The kernel
patch was successful, but I'm having trouble finding a version of ipvsadm
that doesn't dump core. This is a RH6.1 machine with a non-rpm kernel and
the tarballed patch from the main lvs site. I'm not using any
Redhat-specific lvs packages - everything is from scratch. Please let me
know if you need any specific command output. I'm simply trying to
redirect connections at this point using DR and -s rr.

Thanks for any help you might be able to offer.

best,

john

---- ---- ---- ---- Examples below ----

Kernel and build date: 2.2.17 #1 SMP Mon Oct 9

-=-=-

Tarball from main ftp, built in ipvs-0.9.16-2.2.17/ipvsadm/

# ./ipvsadm -h
ipvsadm v1.11 2000/06/16 (compiled with popt and IPVS v0.9.16)

IP Virtual Server version 0.9.16 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port          Forward Weight ActiveConn InActConn

# ./ipvsadm -C

# ./ipvsadm -A -t 1.2.3.4:80 -s rr

[1.2.3.x is/are real IPs in these examples]

# ./ipvsadm
IP Virtual Server version 0.9.16 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port          Forward Weight ActiveConn InActConn
Segmentation fault (core dumped)

-=-=-

>From main ftp, ipvsadm-1.11-4.src.rpm

# ipvsadm -C
# ipvsadm -A -t 1.2.3.4:80 -s rr
# ipvsadm

IP Virtual Server version 0.9.16 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port          Forward Weight ActiveConn InActConn
Segmentation fault (core dumped)

-=-=-

>From main ftp, ipvsadm-1.11.tar.gz

Same as above.

-=-=-

As an experiment, I tried ipvsadm-1.1-2.i386.rpm from rpmfind:

# /sbin/ipvsadm -C
# /sbin/ipvsadm -A -t 1.2.3.4:80 -s rr
# /sbin/ipvsadm

ipvsadm  v1.1 1999/7/1
IP Virtual Server version 0.9.16 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP  [HEX]:0050 rr

# /sbin/ipvsadm -a -t 1.2.3.4:80 -r 1.2.3.5:80

# /sbin/ipvsadm
IP Virtual Server version 0.9.16 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP  [HEX]:0050 rr
  -> [HEX]:0000      Masq    0      0          0

# /sbin/ipvsadm -a -t 1.2.3.4:80 -r 1.2.3.6:80
setsockopt failed: File exists
Destination already exists

The example above doesn't forward packets to 1.2.3.5:80, despite listing
it in the table.

--
John Mora