With the following setup, DHCP host routes are added until lease expiration, they then disappear and are not re-populated.
6500 WS-SUP720-3B with MSFC3 (Redundant in sso mode)
s72033_rp-PK9SV-M Version 12.2(18)SXD7b
FlexWAN - WS-X6182-2PA with PA-A3-OC3-SMI
service dhcp
ip dhcp-server y.y.y.y
interface loopback 1
ip address x.x.x.x
interface ATMX/X/X.x
ip unnumbered loopback1
ip helper-address y.y.y.y
show ip route dhcp
S z.z.z.z/32 is directly connected, ATMX/X/X.x
After 15 minute DHCP lease this route is removed.
Once this route has been removed, nothing I have tried will make it re-populate.
I have removed and re-added loopback interface, removed and re-inserted FlexWAN/PA, reload, fail-over to standby SUP.
However if I re-test 24 hours later, the DHCP host route will be added again, but only until lease expiration and the same behavior repeats.
I did a debug dhcp server events and debug dhcp server packet and I saw forwards to DHCP server and I also saw replies back to client.
Any direction or thoughts are appreciated.
Thanks!
