Cisco VRRP Configuration: Can I use a /30 on VLAN Subinterface

[e.lacks.jr]

I have been unable to find any documentation or examples where a /30 was used to configure a VRRP interface on a cisco router 2911. Is this possible, if so does anybody have an example?

interface GigabitEthernet0/0.1507
description CUSTOMER WAN
encapsulation dot1Q 1507
ip address X.X.X.X 255.255.255.252        // I don't have an extra IP
vrrp 150 address 10.102.32.210
vrrp 150 description VLAN 1507
vrrp 150 priority 150
vrrp 150 timers advertise 110
vrrp 150 timers learn
vrrp 150 track 100 decrement 60
vrrp 150 authentication text mypass
no shut

I understand this is the correct syntax, but obviously, when I have to use a /30 WAN I don't have an extra IP for the standby router's interface.

interface GigabitEthernet0/1.77
description INTERNAL VLAN
encapsulation dot1Q 77 native
ip address 10.40.77.2 255.255.255.0         // 77.3 on Standby
vrrp 77 description VLAN 77
vrrp 77 ip 10.40.77.1
vrrp 77 priority 150
vrrp 77 timers advertise 110
vrrp 77 timers learn
vrrp 77 track 100 decrement 60
vrrp 77 authentication text mypass
no shut

Thank you in advance!

[Deepak Kumar]

Hi,

I am not sure about the design of your network but it may that ISP is taken advantage of IP Subnet Zero command. 

For more explains, could you share the network design and configuration?