阿里云部署freeswitch出现Error Creating SIP UA for profile: external-ipv6的解决办法

在阿里云上部署freeswitch，启动时常常会出现Error Creating SIP UA for profile: external-ipv6错误，这个问题如何解决呢？

报错如下：

2018-07-06 10:36:07.257926 [ERR] sofia.c:3228 Error Creating SIP UA for profile: external-ipv6 (sip:mod_sofia@[::1]:5080;transport=udp,tcp) ATTEMPT 2 (RETRY IN 5 SEC)
2018-07-06 10:36:07.257926 [ERR] sofia.c:3228 Error Creating SIP UA for profile: internal-ipv6 (sip:mod_sofia@[::1]:5060;transport=udp,tcp) ATTEMPT 2 (RETRY IN 5 SEC)
2018-07-06 10:36:12.257913 [ERR] sofia.c:3228 Error Creating SIP UA for profile: external-ipv6 (sip:mod_sofia@[::1]:5080;transport=udp,tcp) ATTEMPT 3 (RETRY IN 5 SEC)
2018-07-06 10:36:12.257913 [ERR] sofia.c:3238 Error Creating SIP UA for profile: external-ipv6 (sip:mod_sofia@[::1]:5080;transport=udp,tcp)
The likely causes for this are:
1) Another application is already listening on the specified address.
2) The IP the profile is attempting to bind to is not local to this system.
2018-07-06 10:36:12.257913 [ERR] sofia.c:3228 Error Creating SIP UA for profile: internal-ipv6 (sip:mod_sofia@[::1]:5060;transport=udp,tcp) ATTEMPT 3 (RETRY IN 5 SEC)
2018-07-06 10:36:12.257913 [ERR] sofia.c:3238 Error Creating SIP UA for profile: internal-ipv6 (sip:mod_sofia@[::1]:5060;transport=udp,tcp)
The likely causes for this are:
1) Another application is already listening on the specified address.
2) The IP the profile is attempting to bind to is not local to this system.

解决办法：

出现问题的原因是阿里云不支持IPV6，需要删除IPV6相关文件

rm -rf /usr/local/freeswitch/conf/sip_profiles/external-ipv6 /usr/local/freeswitch/conf/sip_profiles/external-ipv6.xml /usr/local/freeswitch/conf/sip_profiles/internal-ipv6.xml