Starting with LK 7.1, IP addresses for mirror endpoints can be modified using lk_chg_value. For example, to change a mirror endpoint from IP address 192.168.0.1 to 192.168.1.1:
# lkstop (lk_chg_value cannot be run while LifeKeeper is running)
# lk_chg_value -o 192.168.0.1 -n 192.168.1.1
Execute these commands on all servers involved in the mirror(s) that are using this IP address.