interface is used. The byte values must have prefix 0 added,
the bytes must be separated by ":" char and its length must be
exactly 2 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2 = 17 characters.
+- DeviceName: The interface name where this setting should be applied, e.g.
+ eth0. The MAC address will take preference over DeviceName in matching.
- Nameservers: Comma separated list of nameservers
- SearchDomains: Comma separated list of DNS search domains
- Timeservers: Comma separated list of timeservers