голос по внутренним адресам через ipsec, все работает:
main# tcpdump -tni fxp1 src or dst host 10.0.100.87
IP 10.0.100.87.8000 > 10.0.102.99.8000: UDP, length 172
IP 10.0.102.99.8000 > 10.0.100.87.8000: UDP, length 172
IP 10.0.100.87.8000 > 10.0.102.99.8000: UDP, length 172
IP 10.0.102.99.8000 > 10.0.100.87.8000: UDP, length 172
IP 10.0.100.87.8000 > 10.0.102.99.8000: UDP, length 172
IP 10.0.102.99.8000 > 10.0.100.87.8000: UDP, length 172
по внешним все ходит, кроме голоса:
247-30# tcpdump -tni fxp0 src or dst host 62.168.25*.**
listening on fxp0, link-type EN10MB (Ethernet), capture size 96 bytes
IP 62.168.24*.**.9301 > 62.168.25*.**.9300: UDP, length 14
IP 62.168.25*.**.2727 > 62.168.24*.**.2427: UDP, length 78
IP 62.168.24*.**.2427 > 62.168.25*.**.2727: UDP, length 13
IP 62.168.25*.**.2727 > 62.168.24*.**.2427: UDP, length 104
IP 62.168.24*.**.2427 > 62.168.25*.**.2727: UDP, length 13
IP 62.168.25*.**.9300 > 62.168.24*.**.9301: UDP, length 10
IP 62.168.25*.**.2727 > 62.168.24*.**.2427: UDP, length 70
IP 62.168.24*.**.2427 > 62.168.25*.**.2727: UDP, length 10
IP 62.168.24*.**.2427 > 62.168.25*.**.2727: UDP, length 128
IP 62.168.24*.**.9301 > 62.168.25*.**.9300: UDP, length 129
IP 62.168.25*.**.2727 > 62.168.24*.**.2427: UDP, length 11
IP 62.168.25*.**.2727 > 62.168.24*.**.2427: UDP, length 340
IP 62.168.25*.**.9300 > 62.168.24*.**.9301: UDP, length 14
IP 62.168.24*.**.2427 > 62.168.25*.**.2727: UDP, length 13
IP 62.168.24*.**.9301 > 62.168.25*.**.9300: UDP, length 14
tcpdump с FreeBSD в удаленной сети, там где телефон.
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