Added DNS support

README.rst

@@ -74,6 +74,8 @@ binit_net_route=<addr/cidr>
   Optional static on-link route(s) to add (can be given multiple times).
 binit_net_gw=<addr>
   Optional gateway config, if you want to connect via WAN. If ``binit_net_addr`` is set to ``dhcp``, it will be configured automatically.
+binit_net_ns=<addr>
+  Optional dns servers. (can be given multiple times for multiple dns servers). If ``binit_net_addr`` is set to ``dhcp``, it will be configured automatically.
 rw
   Mount rootfs in read-write. Default: read-only.
 mdev

sourceroot/bin/binit-udhcpc-script

@@ -10,5 +10,6 @@ case "$1" in
         : > "${results}"
         printf 'binit_net_addr=%s\n' "${ip}/${mask}" >>"${results}"
         printf 'binit_net_gw=%s\n' "${router}" >>"${results}"
+        printf 'binit_net_nss=%s\n' "${dns}" >>"${results}"
     ;;  
 esac

sourceroot/functions.sh

@@ -160,6 +160,10 @@ process_commandline_options() {
 			ro|rw)
 				root_rw_ro=$i
 			;;
+			binit_net_ns\=*)
+				# support multiple binit_net_ns=.
+				binit_net_nss="${binit_net_nss} ${i#*=}"
+			;;
 			binit_net_route\=*)
 				# support multiple binit_net_route=.
 				binit_net_routes="${binit_net_routes} ${i#*=}"
@@ -417,6 +421,16 @@ SetupNetwork() {
 		einfo "Setting default routing via '${binit_net_gw}' ..."
 		run ip route add default via "${binit_net_gw}" dev "${binit_net_if}"
 	fi
+
+	if [ -n "${binit_net_nss}" ]; then
+		einfo "Adding nameservers: ${binit_net_nss} ..."
+		set -f
+		for i in ${binit_net_nss}; do
+			printf 'nameserver %s\n' "${i}" >> /etc/resolv.conf
+		done
+		set +f
+	fi
+
 }
 
 setup_sshd() {