dnsmasq: Fix hosts file format when MAC address is not specified
An entry like this in /etc/config/dhcp: config 'host' option 'name' 'pc2' option 'ip' '192.168.100.56' option 'dns' '1' results in a /tmp/hosts/dhcp entry that looks like this: 192.168.100.56 .lan Obviously it should say "pc2.lan". This happens because $name is set to "" in order to support the MAC-less syntax: "--dhcp-host=lap,192.168.0.199". Fix this by reordering the operations. Also, refuse to add a DNS entry if the hostname or IP is missing. Fixes #17683 Reported-by:Kostas Papadopoulos <kpapad75@travelguide.gr> Signed-off-by:
Kevin Cernekee <cernekee@gmail.com> Backport of r42319 git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42389 3c298f89-4303-0410-b956-a3cf2f4a3e73
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