>Попробуй так set link keep-alive 10 60 Пробовал уже давно и не раз. Линк падает и ждешь не 1 секунду а 60
Вот что показывает ТСПдамп как раз перед падением линка
corbina# tcpdump -i fxp0 proto 47
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on fxp0, link-type EN10MB (Ethernet), capture size 96 bytes
21:59:40.334989 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54064,
seq 20, length 24: LCP, Echo-Request (0x09), id 188, length 10
21:59:40.335890 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40325,
seq 22, ack 20, length 28: LCP, Echo-Reply (0x0a), id 188, length 10
21:59:40.347310 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54064,
ack 22, no-payload, length 12
21:59:42.342366 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54064,
seq 21, length 24: LCP, Echo-Request (0x09), id 189, length 10
21:59:42.343510 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40325,
seq 23, ack 21, length 28: LCP, Echo-Reply (0x0a), id 189, length 10
21:59:42.352465 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54064,
ack 23, no-payload, length 12
21:59:44.575158 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40325,
seq 24, ack 21, length 32: LCP, Echo-Request (0x09), id 3, length 14
21:59:47.436954 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54064,
seq 28, length 20: LCP, Term-Request (0x05), id 61, length 6
21:59:47.443158 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40325,
seq 25, ack 28, length 24: LCP, Term-Ack (0x06), id 61, length 6
21:59:47.496438 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54070,
seq 0, length 40: LCP, Conf-Request (0x01), id 62, length 26
21:59:49.500050 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40327,
seq 1, ack 4294967295, length 39: LCP, Conf-Request (0x01), id 1, length 21
21:59:49.500330 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54070,
seq 1, ack 1, length 44: LCP, Conf-Request (0x01), id 63, length 26
21:59:49.502434 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40327,
seq 2, ack 1, length 44: LCP, Conf-Ack (0x02), id 63, length 26
21:59:49.524382 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54070,
ack 2, no-payload, length 12
21:59:50.511641 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54070,
seq 2, length 24: LCP, Echo-Request (0x09), id 192, length 10
21:59:50.513040 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40327,
seq 3, ack 2, length 28: LCP, Echo-Reply (0x0a), id 192, length 10
21:59:50.532078 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54070,
ack 3, no-payload, length 12
21:59:51.512550 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54070,
seq 3, length 20: LCP, Term-Request (0x05), id 64, length 6
21:59:51.513759 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40327,
seq 4, ack 3, length 24: LCP, Term-Ack (0x06), id 64, length 6
21:59:51.525228 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40327,
seq 5, ack 3, length 24: LCP, Term-Request (0x05), id 2, length 6
21:59:51.570414 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 0, length 40: LCP, Conf-Request (0x01), id 65, length 26
21:59:53.565864 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 1, ack 0, length 39: LCP, Conf-Request (0x01), id 1, length 21
21:59:53.567159 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 1, ack 1, length 39: LCP, Conf-Ack (0x02), id 1, length 21
21:59:53.572212 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 2, length 40: LCP, Conf-Request (0x01), id 66, length 26
21:59:53.575028 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 2, ack 2, length 44: LCP, Conf-Ack (0x02), id 66, length 26
21:59:53.595637 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 3, ack 2, length 49: CHAP, Challenge (0x01), id 1, Value :))), Name vpn4.srt
21:59:53.596306 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 3, ack 3, length 71: CHAP, Response (0x02), id 1, Value :))), Name :) [|chap]
21:59:53.993832 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 4, ack 3, length 24: CHAP, Success (0x03), id 1, Msg
21:59:53.994081 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 5, ack 3, length 30: IPCP, Conf-Request (0x01), id 1, length 12
21:59:53.995413 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 4, ack 5, length 30: IPCP, Conf-Request (0x01), id 106, length 12
21:59:53.996862 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 5, length 26: IPCP, Conf-Ack (0x02), id 1, length 12
21:59:53.997510 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 6, ack 4, length 30: IPCP, Conf-Nack (0x03), id 106, length 12
21:59:53.999720 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 6, ack 6, length 30: IPCP, Conf-Request (0x01), id 107, length 12
21:59:54.001298 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 7, ack 6, length 30: IPCP, Conf-Ack (0x02), id 107, length 12
21:59:55.672677 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 7, length 24: LCP, Echo-Request (0x09), id 193, length 10
21:59:55.673594 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 8, ack 7, length 28: LCP, Echo-Reply (0x0a), id 193, length 10
21:59:55.732993 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
ack 8, no-payload, length 12
21:59:57.680261 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
seq 8, length 24: LCP, Echo-Request (0x09), id 194, length 10
21:59:57.681015 IP vpn4-lo0.srt.corbina.net > ipa.corbina.my: GREv1, call 40329,
seq 9, ack 8, length 28: LCP, Echo-Reply (0x0a), id 194, length 10
21:59:57.727040 IP ipa.corbina.my > vpn4-lo0.srt.corbina.net: GREv1, call 54072,
ack 9, no-payload, length 12
Все идет как всегда норм. И с этого пункта "21:59:47.436954" именно я отправляю Term-Request (просьбу о каком-то завершении) соединения. А серв "21:59:47.443158" подтверждает. ОЧЧЧЕНЬ СТРАННО. ХЕЛП
vpn4-lo0.srt.corbina.net - адрес ВПН сервер Корбины
ipa.corbina.my - адрес Дин. ИП назначенный Корбиной автоматом сетевой карте