Fix resolving FQDN given by DHCP

[live-boot-grml.git] / components / 9990-networking.sh

diff --git a/components/9990-networking.sh b/components/9990-networking.sh
index 8e059c9..2927107 100755 (executable)
--- a/components/9990-networking.sh
+++ b/components/9990-networking.sh
@@ -131,6 +131,22 @@ do_netsetup ()
                        HWADDR="$(cat /sys/class/net/${interface}/address)"
                fi
 
+               # Only create /etc/hosts if FQDN is known (to let 'hostname -f' query
+               # this file). Otherwise DNS will be queried to determine the FQDN.
+               if [ ! -e "/etc/hosts" ] && [ -n "${DNSDOMAIN}" ]
+               then
+                       echo "Creating /etc/hosts"
+                       cat > /etc/hosts <<EOF
+127.0.0.1      localhost
+127.0.1.1      ${HOSTNAME}.${DNSDOMAIN}        ${HOSTNAME}
+
+# The following lines are desirable for IPv6 capable hosts
+::1     localhost ip6-localhost ip6-loopback
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+EOF
+               fi
+
                if [ ! -e "/etc/resolv.conf" ]
                then
                        echo "Creating /etc/resolv.conf"