Hey, been doing some more troubleshooting and raise a SR with VMware for this one. Not using VLANs for this, it specified as 0 in our builds. What I am having issues with is the default gateway doesn't get added to the IP configuration and the profile doesn't apply. Even if I manually the the gateway to the IP configuration of the host in the DCUI, it is still not visible on the network. I did an esxcfg-route -l and can see the following:
Network Netmask Gateway Interface
172.18.8.0 255.255.255.0 Local Subnet vmk0
default 0.0.0.0 172.18.8.1 vmk0
Followed KB2001426 to try manually adding the default gateway but get error. Duplicate route to network x.x.x.x/xx found. Please delete the old route first.
So I've tried removing that old route but you can't because its in use as a default kernel port. Have checked all the vSphere Distributed switch settings and cannot see why it won't apply the profile. It doesn't even disconnect and reconnect the host before the apply host configuration stage. Last log in the Syslog on the host shows failed to get profile for deferred param path network.genericNetStackInstanceProfile [key-vim-profile-host-GenericNetStackIintanceProfile-defaulyTcpipStack].genericDnsConfigProfile.
Running out of ideas now 