Symptoms

BIG-IP not translating SDP or via headers IP with listener IP for an outbound call which causes to drop the 200 OK response.

Impact

Media pinholes are not created for INVITE.

Conditions

In SIP ALG, INVITE request with FQDN Route header.

Workaround

In the SIP_REQUEST event, a specific Route header could be removed and Insert it again in the SIP_REQUEST_SEND event before sending the request out. For example, when SIP_REQUEST { set pd_route_hdr_count [SIP::header count Route] set pd_route_unset 0 set pd_route [SIP::header Route] if {[SIP::method] == "INVITE" && ($pd_route_hdr_count equals 1) && $pd_route contains "sip:total.acc.nl;lr" } then { SIP::header remove "Route" set pd_route_unset 1 } } when SIP_REQUEST_SEND { if {[SIP::method] == "INVITE" && ($pd_route_unset == 1)} then { SIP::header insert "Route" $pd_route } }

Fix Information

None

Behavior Change