I have interesting situation after firewall migration on two of my virtual servers Win 2012 R2 exhibiting very weird behavior with default gateways.
During migration I have two firewalls in the same network one with 192.168.1.254 (old) and 192.168.168.1.1 (new) So i just simply swaps default gateway on each node with static IP inside of the network from 192.168.1.254 (old) to 192.168.168.1.1 (new)
Everything worked fine on most of the servers except two virtual servers located on totally different hosts. Default gateway 192.168.1.254 (old) would reappear resulting in two default gateways on same NIC. Every time I remove 192.168.1.254 (old) and just leave 192.168.168.1.1 (new) the old DG will comeback in just few hours.
Did anyone see anything like that before?