[Dnsmasq-discuss] Weird duplicate IP address warning

[e9hack]

Hi,

depend on the configuration, warnings like

duplicate IP address 192.168.1.4 (my-pc) in dhcp-config directive

or

duplicate IP address fec0::ffff:0:0:1:4 (my-pc) in dhcp-config directive

are in the log file. They occur, if there exist multiple entries in the hosts and config
file for the same host for IPv4 and IPv6. The logic to hit such a warning is a little bit
weird. For one host, it exist 7 combinations for the entries in hosts and config:

hosts		config		warning
ipv4		ipv4		-
ipv4+ipv6	ipv4		-
ipv6		ipv6		-
ipv4+ipv6	ipv6		-
ipv4		ipv4+ipv6	ipv4
ipv6		ipv4+ipv6	ipv6
ipv4+ipv6	ipv4+ipv6	ipv4+ipv6

It's same IPv4 and IPv6 address for this host.
Why needs the ipv4 warning an ipv6 config entry and the ipv6 warning an ipv4 config entry?

Regards,
Hartmut