Hello, I am getting lots of messages like that: Sep 4 15:31:55 WARNING[10271]: chan_sip.c:946 __sip_xmit: sip_xmit of 0x835bad8 (len 758) to xxx.xxx.xxx.xxx returned -1: Invalid argument Could somebody tell me more about that warning? I would appreciate it. I could not find anything interesting about that warning. Thank you in advance. Bartosz