[Users] branchroute problem

Hi! In the following scenario, a call is forked to 3 phones. 2 of them are behind the same NAT (same publich IP, different port, one uses STUN, one not). I xlog all branches,dest-sets... in route[] and then in branch_route. But the branch route is executed on 2 times, instead of three times (the destination set shows that there are 3 destinations) Although the destination set is changed in the second branch processing. Is this the intended way? regards klaus route[]: request's first branch: $br=sip:10.10.0.50:15360 request's all branches: $bR=sip:10.10.0.50:15360, sip:klaus@83.136.33.3:8718 request's destination set: $ds=Contact: sip:klaus@83.136.33.19:5060, sip:10.10.0.50:15360, sip:klaus@83.136.33.3:8718 request's destination uri: $du= request's uri: $ru=sip:klaus@83.136.33.19:5060 activating t_on_branch(1) branch_route[1]: first branch processing branch_route[1]: request's first branch: $br=sip:10.10.0.50:15360 branch_route[1]: request's all branches: $bR=sip:10.10.0.50:15360, sip:klaus@83.136.33.3:8718 branch_route[1]: request's destination set: $ds=Contact: sip:klaus@83.136.33.19:5060, sip:10.10.0.50:15360, sip:klaus@83.136.33.3:8718 branch_route[1]: request's destination uri: $du= branch_route[1]: request's uri: $ru=sip:klaus@83.136.33.19:5060 branch_route[1]: second branch processing branch_route[1]: request's first branch: $br=sip:10.10.0.50:15360 branch_route[1]: request's all branches: $bR=sip:10.10.0.50:15360, sip:klaus@83.136.33.3:8718 branch_route[1]: request's destination set: $ds=Contact: sip:10.10.0.50:15360, sip:10.10.0.50:15360, sip:klaus@83.136.33.3:8718 branch_route[1]: request's destination uri: $du=sip:83.136.33.3:3003 branch_route[1]: request's uri: $ru=sip:10.10.0.50:15360 ...no third branch procesing :-(