I have tried to disable as much as possible as there is just too much traffic.
Does this show anything?
[2020-05-30 21:37:55] WARNING[3361] chan_sip.c: sip_xmit of 0x7f92f00511f0 (len 633) to 107.87.136.87:42392 returned -1: Address family not supported by protocol
[2020-05-30 21:37:56] VERBOSE[3361] chan_sip.c: Retransmitting #3 (NAT) to 107.87.136.87:42392:
OPTIONS sips:[email protected]:42392;rinstance=F5020D3C;transport=tcp SIP/2.0
Via: SIP/2.0/UDP 47.205.194.61:5060;branch=z9hG4bK783b295b;rport
Max-Forwards: 70
From: "Unknown" <sip:[email protected]>;tag=as0e563293
To: <sips:[email protected]:42392;rinstance=F5020D3C;transport=tcp>
Contact: <sip:[email protected]:5060>
Call-ID: [email protected]:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-15.0.16.53(16.9.0)
Date: Sun, 31 May 2020 01:37:53 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Content-Length: 0
[2020-05-30 21:37:56] WARNING[3361] chan_sip.c: sip_xmit of 0x7f92f00511f0 (len 633) to 107.87.136.87:42392 returned -1: Address family not supported by protocol
[2020-05-30 21:37:57] VERBOSE[3361] chan_sip.c: Retransmitting #4 (NAT) to 107.87.136.87:42392:
OPTIONS sips:[email protected]:42392;rinstance=F5020D3C;transport=tcp SIP/2.0
Via: SIP/2.0/UDP 47.205.194.61:5060;branch=z9hG4bK783b295b;rport
Max-Forwards: 70
From: "Unknown" <sip:[email protected]>;tag=as0e563293
To: <sips:[email protected]:42392;rinstance=F5020D3C;transport=tcp>
Contact: <sip:[email protected]:5060>
Call-ID: [email protected]:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-15.0.16.53(16.9.0)
Date: Sun, 31 May 2020 01:37:53 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Content-Length: 0
[2020-05-30 21:37:57] WARNING[3361] chan_sip.c: sip_xmit of 0x7f92f00511f0 (len 633) to 107.87.136.87:42392 returned -1: Address family not supported by protocol
[2020-05-30 21:37:57] VERBOSE[3361] chan_sip.c: Really destroying SIP dialog ‘[email protected]:5060’ Method: OPTIONS