Routing UDP SIP responses to Via Address

My guess is you are running node command on server-side of the connection.

 

in that case, node command may not have any effect.

 

 

can you do something like this

 

 

log local0. "serverside=[serverside]"

 

 

if it log serverside=1, you may read more. otherwise, you may ignore the rest of this post.

 

 

with default udp profile, BIG-IP treats UDP as a connection oriented which means BIG-IP does not make LB decision for returning traffic (which means node command does not have any effect)

 

 

to configure bigip to to perform LB decision for returning traffic. you may need to use immediate timeout in UDP profile

 

- assign immediate timeout udp profile to VIP (be careful, this may affect all traffic)

 

- create VIP2 (which is same as SNAT IP) to intercept returning traffic. apply your iRule to VIP2

 

 

Thanks

 

Nat