Вижу в дампе сплошной трафик IPSec ... скажите, у вас настроен туннель L2TP или L2TP/IPsec ?
14:33:11.489175 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18e9), length 68
14:33:12.807511 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec0), length 68
14:33:12.930978 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18ea), length 68
14:33:14.549155 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec1), length 260
14:33:14.687018 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18eb), length 260
14:33:15.933634 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec2), length 132
14:33:16.090993 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18ec), length 196
14:33:16.205400 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18ed), length 68
14:33:16.205670 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec3), length 68
14:33:16.369853 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec4), length 68
14:33:16.522511 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18ee), length 68
14:33:17.619658 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec5), length 132
14:33:17.771687 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18ef), length 148
14:33:18.483689 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec6), length 116
14:33:18.641822 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f0), length 116
14:33:18.802392 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec7), length 100
14:33:18.802484 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec8), length 212
14:33:18.966552 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f1), length 180
14:33:18.996342 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xec9), length 116
14:33:19.138676 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xeca), length 260
14:33:19.214403 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f2), length 340
14:33:19.476929 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xecb), length 100
14:33:20.164586 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: isakmp-nat-keep-alive
14:33:20.164855 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: isakmp-nat-keep-alive
14:33:21.373820 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xecc), length 68
14:33:21.450900 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f3), length 68
14:33:21.910758 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xecd), length 116
14:33:21.962741 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xece), length 132
14:33:22.047797 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f4), length 148
14:33:22.610014 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xecf), length 100
14:33:22.693118 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed0), length 100
14:33:22.701451 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f5), length 100
14:33:22.776796 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed1), length 116
14:33:22.783246 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f6), length 100
14:33:22.867487 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f7), length 116
14:33:22.874414 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed2), length 260
14:33:22.961295 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed3), length 100
14:33:22.966861 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed4), length 1460
14:33:22.967667 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed5), length 980
14:33:23.065584 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f8), length 100
14:33:23.065877 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18f9), length 372
14:33:23.151192 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18fa), length 180
14:33:23.160679 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed6), length 324
14:33:23.171078 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed7), length 212
14:33:23.171497 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18fb), length 212
14:33:23.181815 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed8), length 356
14:33:23.182568 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18fc), length 180
14:33:23.192743 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xed9), length 212
14:33:23.196910 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18fd), length 308
14:33:23.200004 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18fe), length 180
14:33:23.205424 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xeda), length 324
14:33:23.245941 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x18ff), length 388
14:33:23.256616 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xedb), length 324
14:33:23.272823 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x1900), length 324
14:33:23.282271 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xedc), length 324
14:33:23.304426 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x1901), length 356
14:33:23.312786 IP VPNKI.ipsec-nat-t > broadband-90-154-70-176.ip.moscow.rt.ru.6424: UDP-encap: ESP(spi=0xc01407cf,seq=0xedd), length 244
14:33:23.320141 IP broadband-90-154-70-176.ip.moscow.rt.ru.6424 > VPNKI.ipsec-nat-t: UDP-encap: ESP(spi=0x284da818,seq=0x1902), length 244