For instance this service IP was changed for the VIP:
rush@lvs1006:~# sudo ipvsadm -L | grep TCP TCP 184.108.40.206:ssh wrr
to (where both coexited post change)
rush@sudo lvs1006:~# ipvsadm -L | grep TCP TCP 220.127.116.11:ssh wrr TCP git-ssh.eqiad.wikimedia.org: wrr
I restarted a few times and made sure this was persistent behavior.
I cleaned up the old VIP manually with:
ipvsadm -D -t 18.104.22.168:ssh
This may be too much of an edge case to worry about seriously.