I have two ethernet interfaces: eth0 is connected to my local net, with
a static address. eth1 is connected to a cable modem (cybercable french
ISP), which uses dhcp.

Back to RedHat 6.1, pump worked but the system locked every time
I ifdown-ed the interface (but only after 8 hours of activity, so I
guess that had someting to do with the address renewal). I solved that
problem at the time by installing a rawhide version of pump (too bad
I don't remember the version).

After upgrading to RedHat 6.2, pump does not activate the interface
anymore. It just give up after 2 or 3 minutes.

I enabled the debug messages in syslog.conf and I got:

Apr  7 21:16:51 deep-space-9 ifup: Determining IP information for eth1...
Apr  7 21:16:51 deep-space-9 pumpd[328]: starting at (uptime 0 days,
0:00:29) Fri Apr  7 21:16:51 2000
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: opcode: 1
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: hwlength: 6
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: id: 0x6505777b
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: flags: 0x0000
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: yiaddr: 0.0.0.0
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: bootp_gw_ip: 0.0.0.0
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: servername:
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: vendor: 0x63 0x53 0x82 0x63
Apr  7 21:16:51 deep-space-9 pumpd[328]: breq: vendor: 0xff
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: opcode: 1
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: hwlength: 6
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: id: 0x6505775d
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: flags: 0x0000
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: yiaddr: 0.0.0.0
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: bootp_gw_ip: 0.0.0.0
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: servername:
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: vendor: 0x63 0x53 0x82 0x63
Apr  7 21:17:21 deep-space-9 pumpd[328]: breq: vendor: 0xff
Apr  7 21:17:51 deep-space-9 ifup: Operation failed.
Apr  7 21:17:51 deep-space-9 ifup:  failed.
Apr  7 21:17:51 deep-space-9 network: Bringing up interface eth1 failed

I'm not sure what other kind of information I could give to you,
but feel free to contact me if necessary.

I found a bugzilla item concerning pump and cybercable, maybe the
two problems are related?

For instance, I changed ifup/ifdown to use dhcpcd and it works.

Stelian.