Проблема где-то глубже.
tcpdump на астериске показывает, что пакеты от планета прилетают и ответы шлются.
До планета не долетают ответы.
Самая фигня, что ответы астериска не долетают до маршрутизатора.
12:14:21.093673 IP (tos 0x0, ttl 61, id 42548, offset 0, flags [none], proto: UDP (17), length: 519) 192.168.8.200.sip > 192.168.2.205.sip: SIP, length: 491
REGISTER sip:192.168.2.205 SIP/2.0
Via: SIP/2.0/UDP 1
12:14:21.093840 IP (tos 0x60, ttl 64, id 19066, offset 0, flags [none], proto: UDP (17), length: 545) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 517
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP
12:14:22.421278 IP (tos 0x60, ttl 64, id 19067, offset 0, flags [none], proto: UDP (17), length: 534) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 506
OPTIONS sip:192.168.8.200 SIP/2.0
Via: SIP/2.0/UDP
12:14:23.420951 IP (tos 0x60, ttl 64, id 19068, offset 0, flags [none], proto: UDP (17), length: 534) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 506
OPTIONS sip:192.168.8.200 SIP/2.0
Via: SIP/2.0/UDP
12:14:24.420909 IP (tos 0x60, ttl 64, id 19069, offset 0, flags [none], proto: UDP (17), length: 534) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 506
OPTIONS sip:192.168.8.200 SIP/2.0
Via: SIP/2.0/UDP
12:14:25.080682 IP (tos 0x0, ttl 61, id 42549, offset 0, flags [none], proto: UDP (17), length: 519) 192.168.8.200.sip > 192.168.2.205.sip: SIP, length: 491
REGISTER sip:192.168.2.205 SIP/2.0
Via: SIP/2.0/UDP
12:14:25.081236 IP (tos 0x60, ttl 64, id 19070, offset 0, flags [none], proto: UDP (17), length: 545) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 517
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 192.168.8.2
12:14:25.420854 IP (tos 0x60, ttl 64, id 19071, offset 0, flags [none], proto: UDP (17), length: 534) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 506
OPTIONS sip:192.168.8.200 SIP/2.0
Via: SIP/2.0/UDP
12:14:26.420781 IP (tos 0x60, ttl 64, id 19072, offset 0, flags [none], proto: UDP (17), length: 534) 192.168.2.205.sip > 192.168.8.200.sip: SIP, length: 506
OPTIONS sip:192.168.8.200 SIP/2.0
Via: SIP/2.0/UDP