Large response to REGISTER due to multiple Contact headers

Hi,

In some cases the response received by the SBC to REGISTER messages sent to the Proxy contains multiple Contact headers resulting in a very large response which is ignored by the SBC.
Looking at the logs I can see that this very large response is rejected at a low layer not reaching the SIP layer causing the SBC to retransmit the request.
(when reducing the number of Contact headers, the message size is reduced and the registration succeeds).
We are using SIP/UDP.

In the logs I can see the following log:

<sipmsg.cpp:21278> REGISTER 21 <200> process-resp: length 5469 exceeds max of 4096