The value of vRtrIfLocalDhcpServerName specifies the local DHCP server
that can be reached via this interface.
The server itself is configured on virtual router level in object
TIMETRA-DHCP-SERVER-MIB::tmnxDhcpServerCfgServerName. Assigning
an ip-address to it is done here by linking it to an interface.
A server can be linked to several interfaces on the same virtual
router.