pb26r614 fixes a race condition with IPsec startup when the WAN IP
address is dynamic (i.e. DHCP, PPPoE or PPTP).
Note that with a dynamic IP address on WAN, IPsec VPN is brought up
only when the WAN interface is up (DHCP lease obtained or PPPoE/PPTP
session established) - keep this in mind when experimenting with
tunnels to optional interfaces or LAN while for example WAN is set to
DHCP but not actually connected. Use a static IP address on WAN if you
want to test without a WAN connection.