Здравствуйте, возникла проблема при настройки VPN(Ipsec+GRE) туннеля между двумя офисами с реальными ip адресами. Эти конфигурации работали раньше, когда провайдер делал нам отдельную подсеть между ними. Ну, то есть с одной стороны адрес 172.16.0.5, а с другой 172.16.0.2. Сейчас новый провайдер с двух сторон разные адреса итд. Привожу конфигурации. За любой совет спасибо.
вот схема:
Офис1
внутренний адрес 192.168.1.251
внешний 78.107.219.163
офис2
внутр. адрес 192.168.0.1
внешний 78.107.133.178

офис1

version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
no service dhcp
!
hostname sevast-corb
!
boot-start-marker
boot-end-marker
!
logging buffered 51200
!
no aaa new-model
clock timezone PCTime 3
!
crypto pki trustpoint TP-self-signed-889844593
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-889844593
revocation-check none
rsakeypair TP-self-signed-889844593
!
!
crypto pki certificate chain TP-self-signed-889844593
certificate self-signed 01
        quit
dot11 syslog
no ip dhcp use vrf connected
ip dhcp excluded-address 10.10.10.1
!
ip dhcp pool sdm-pool
   import all
   network 10.10.10.0 255.255.255.248
   default-router 10.10.10.1
   lease 0 2
!
!
ip cef
no ip domain lookup
!
!
!
username admin privilege 15 secret 5 xxxxxxxxxxxxxxxx
!
!
crypto isakmp policy 30
hash md5
authentication pre-share
crypto isakmp key ******* address 78.107.133.178 no-xauth
!
!
crypto ipsec transform-set TSZT esp-des esp-md5-hmac
mode transport
!
crypto map CM 10 ipsec-isakmp
set peer 78.107.133.178
set transform-set TSZT
match address 101
!
archive
log config
  hidekeys
!
!
!
!
!
interface Tunnel0
ip address 192.168.100.2 255.255.255.252
ip broadcast-address 0.0.0.0
ip mtu 1400
ip virtual-reassembly
tunnel source FastEthernet4
tunnel destination 78.107.133.178
tunnel path-mtu-discovery
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
description telecom
ip address 78.107.219.163 255.255.255.240
ip broadcast-address 0.0.0.0
ip virtual-reassembly
duplex auto
speed auto
crypto map CM
!
interface Vlan1
description LAN
ip address 192.168.1.251 255.255.255.0
ip broadcast-address 0.0.0.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip virtual-reassembly
ip route-cache flow
ip tcp adjust-mss 1360
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 78.107.219.161
ip route 192.168.0.0 255.255.255.0 Tunnel0
!
no ip http server
ip http access-class 23
ip http authentication local
no ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
access-list 101 permit gre host 78.107.219.163 host 78.107.133.178
no cdp run
!
control-plane
!
!
line con 0
login local
no modem enable
line aux 0
line vty 0 4
access-class 23 in
privilege level 15
login local
transport input telnet ssh
!
scheduler max-task-time 5000
end

Офис2

!
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
service sequence-numbers
no service dhcp
!
hostname corbina-kash
!
boot-start-marker
boot-end-marker
!
logging buffered 51200
logging console critical
enable secret 5 xxxxxxxxxxxxxxxxxx
!
no aaa new-model
!
!
dot11 syslog
no ip source-route
!
!
ip cef
no ip bootp server
no ip domain lookup
!
!
!
username admin privilege 15 secret 5 xxxxxxxxxxxxxxxxxx
!
!
crypto isakmp policy 30
hash md5
authentication pre-share
crypto isakmp key xxxxxxxx address 78.107.219.163 no-xauth
!
!
crypto ipsec transform-set TSZT esp-des esp-md5-hmac
mode transport
!
crypto map CM 10 ipsec-isakmp
set peer 78.107.219.163
set transform-set TSZT
match address 101
!
archive
log config
  hidekeys
!
!
ip tcp synwait-time 10
ip ssh time-out 60
ip ssh authentication-retries 2
!
!
!
interface Tunnel0
ip address 192.168.100.1 255.255.255.252
ip mtu 1400
ip virtual-reassembly
tunnel source FastEthernet4
tunnel destination 78.107.219.163
tunnel path-mtu-discovery
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
description ex
ip address 78.107.133.178 255.255.255.240
no ip redirects
no ip unreachables
no ip proxy-arp
ip virtual-reassembly
ip route-cache flow
duplex auto
speed auto
crypto map CM
!
interface Vlan1
description Local Area Network
ip address 192.168.0.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
ip tcp adjust-mss 1452
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 78.107.133.177
ip route 192.168.1.0 255.255.255.0 Tunnel0
!
no ip http server
no ip http secure-server
!
access-list 101 permit gre host 78.107.219.163 host 78.107.133.178
no cdp run
!
control-plane
!
banner login ^CAuthorized access only! !^C
!
line con 0
login local
no modem enable
transport output telnet
line aux 0
line vty 0 4
login
!
scheduler max-task-time 5000
end

Где ошибка?