During a re-invite, it looks I get a strange decode error if the Route header is to long, or is there something else I have missed...

23(23945) DEBUG: rr [rr_cb.c:95]: run_rr_callbacks(): callback id 0 entered with <transport=tls;r2=on;lr=on;ftag=as03d8c4db;vsf=AAAAAEFVRVNSRxtbXFhFITUbBwcLEQBaQAFVDkVFUXI9cGhvbmU-> 23(23945) DEBUG: uac [replace.c:527]: restore_uri(): getting 'vsf' Route param 23(23945) DEBUG: uac [replace.c:535]: restore_uri(): route param is 'AAAAAEFVRVNSRxtbXFhFITUbBwcLEQBaQAFVDkVFUXI9cGhvbmU-' (len=52) 23(23945) DEBUG: uac [replace.c:609]: restore_uri(): decoded uris are: new=[sip:xxxxxxxxxx@u*5?%"9tu3{6dB

@hone] old=[sip:xxxx.xxxx@10.0.0.1:5060]

Kamailio 4.3.4 is used.