При установлении VPN между DI-824vup+ и DFL-1600 возникают перебои с прохождением пакетов и в логах ошибка error = 16. Что она может означать? В логах пишет следующее:

Monday August 27, 2007 19:30:26 Receive IKE INFO : 11.11.11.58 --> 22.22.22.110
Monday August 27, 2007 19:30:26 Receive IKE Q1(QINIT) : [11.11.11.58]-->[22.22.22.110]
Monday August 27, 2007 19:30:26 Requested routing is [172.29.200.0|11.11.11.58]<->[22.22.22.110|10.0.0.0]
Monday August 27, 2007 19:30:26 error = 16
Monday August 27, 2007 19:30:29 Send IKE Q1(QINIT) : 10.0.0.0 --> 172.29.200.0
Monday August 27, 2007 19:30:30 Receive IKE Q1(QINIT) : [11.11.11.58]-->[22.22.22.110]
Monday August 27, 2007 19:30:30 Requested routing is [172.29.200.0|11.11.11.58]<->[22.22.22.110|10.0.0.0]
Monday August 27, 2007 19:30:30 error = 16
Monday August 27, 2007 19:30:31 Send IKE Q1(QINIT) : 10.0.0.0 --> 172.29.200.0
Monday August 27, 2007 19:30:34 IKED re-TX : QINIT to 11.11.11.58
Monday August 27, 2007 19:30:36 IKED re-TX : QINIT to 11.11.11.58
Monday August 27, 2007 19:30:38 Receive IKE Q1(QINIT) : [11.11.11.58]-->[22.22.22.110]
Monday August 27, 2007 19:30:38 Requested routing is [172.29.200.0|11.11.11.58]<->[22.22.22.110|10.0.0.0]
Monday August 27, 2007 19:30:38 error = 16
Monday August 27, 2007 19:30:39 Send IKE Q1(QINIT) : 10.0.0.0 --> 172.29.200.0
Monday August 27, 2007 19:30:39 IKED re-TX : QINIT to 11.11.11.58
Monday August 27, 2007 19:30:41 IKED re-TX : QINIT to 11.11.11.58
Monday August 27, 2007 19:30:44 IKED re-TX : QINIT to 11.11.11.58
Monday August 27, 2007 19:30:49 IKED re-TX : QINIT to 11.11.11.58
Monday August 27, 2007 19:30:22 IKE phase2 (IPSec SA) remove : 10.0.0.0 <-> 172.29.200.0
Monday August 27, 2007 19:30:22 inbound SPI = 0x0, outbound SPI = 0x0
Monday August 27, 2007 19:30:22 Send IKE (INFO) : delete 22.22.22.110 -> 11.11.11.58 phase 1
Monday August 27, 2007 19:30:22 IKE phase1 (ISAKMP SA) remove : 22.22.22.110 <-> 11.11.11.58
Monday August 27, 2007 19:30:23 Receive IKE M1(INIT) : 11.11.11.58 --> 22.22.22.110
Monday August 27, 2007 19:30:23 Try to match with ENC:3DES AUTH:PSK HASH:SHA1 Group:Group2
Monday August 27, 2007 19:30:23 Send IKE M2(RESP) : 22.22.22.110 --> 11.11.11.58
Monday August 27, 2007 19:30:23 Receive IKE M3(KEYINIT) : 11.11.11.58 --> 22.22.22.110
Monday August 27, 2007 19:30:23 Send IKE M4(KEYRESP) : 22.22.22.110 --> 11.11.11.58
Monday August 27, 2007 19:30:23 Receive IKE M5(IDINIT) : 11.11.11.58 --> 22.22.22.110
Monday August 27, 2007 19:30:23 Send IKE M6(IDRESP) : 22.22.22.110 --> 11.11.11.58
Monday August 27, 2007 19:30:23 IKE Phase1 (ISAKMP SA) established : 22.22.22.110 <-> 11.11.11.58
Monday August 27, 2007 19:30:23 Receive IKE Q1(QINIT) : [11.11.11.58]-->[22.22.22.110]
Monday August 27, 2007 19:30:23 Requested routing is [172.29.200.0|11.11.11.58]<->[22.22.22.110|10.0.0.0]
Monday August 27, 2007 19:30:23 error = 16

в аттаче расшифровка ошибок IKE.
Я могу предположить, что у Вас ошибка в описании локальной и удалённой сети на устройствах.