Summary:	ASTERISK-26625: All PJSIP calls rejected with 'Unable to allocate RTP socket: Address family not supported by protocol'
Reporter:	Alexei Gradinari (alexei gradinari)	Labels:
Date Opened:	2016-11-25 12:27:22.000-0600	Date Closed:	2016-11-28 06:11:00.000-0600
Priority:	Critical	Regression?
Status:	Closed/Complete	Components:	Resources/res_pjsip_sdp_rtp
Versions:	13.13.0	Frequency of Occurrence
Related Issues:	duplicates ASTERISK-26617 res_rtp_asterisk: Can't bind on systems without IPv6
Environment:	Linux 4.8.3 # CONFIG_IPV6 is not set	Attachments:
Description:	If the IPV6 is not supported the asterisk rejects all PJSIP calls with next errors: {noformat} WARNING[28163] res_rtp_asterisk.c: Unable to allocate RTP socket: Address family not supported by protocol WARNING[28163] res_rtp_asterisk.c: Failed to create a new socket for RTP instance '0x3cfb060' ERROR[28163] res_pjsip_sdp_rtp.c: Unable to create RTP instance using RTP engine 'asterisk' {noformat} The endpoint is configured with {noformat} bind_rtp_to_media_address          : false media_address                      : {noformat} It's because the res_pjsip_sdp_rtp.c on load_module set default address to "::" which is the IPV6 address, then in a create_rtp a function 'ast_rtp_instance_new' is called with this IPV6 address. The function ast_rtp_new in res_rtp_asterisk.c checks sockaddr type and calls a function create_new_socket with a domain AF_INET6. The function create_new_socket calls socket with domain AF_INET6, as the IPV6 is not supported by the system, we got "Address family not supported by protocol"
Comments:	By: Asterisk Team (asteriskteam) 2016-11-25 12:27:22.498-0600 Thanks for creating a report! The issue has entered the triage process. That means the issue will wait in this status until a Bug Marshal has an opportunity to review the issue. Once the issue has been reviewed you will receive comments regarding the next steps towards resolution. A good first step is for you to review the [Asterisk Issue Guidelines|https://wiki.asterisk.org/wiki/display/AST/Asterisk+Issue+Guidelines] if you haven't already. The guidelines detail what is expected from an Asterisk issue report. Then, if you are submitting a patch, please review the [Patch Contribution Process|https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process].