Hi, it looks like we have issue with configuring DHCP DNS OPT 6 for certain interface. Here are some examples:
interface=eth2.11 dhcp-range=interface:eth2.11,10.11.1.2,10.11.1.201,7200 dhcp-option=interface:eth2.11,3,10.11.1.1 dhcp-option=interface:eth2.11,6,10.11.1.1 interface=eth2.12 dhcp-range=interface:eth2.12,10.12.1.2,10.12.1.201,7200 dhcp-option=interface:eth2.12,3,10.12.1.1 dhcp-option=interface:eth2.12,6,10.12.1.1 interface=eth2 dhcp-range=eth2,10.0.1.2,10.0.1.201,7200 dhcp-option=interface:eth2,3,10.0.1.1 dhcp-option=interface:eth2,6,10.0.1.1 In such setup, dnsmasq does not including OPTION: 6 ( 4) DNS server 10.0.1.1 Into DHCPACK messages send to eth2, but perfectly sending correct DNS IPs to eth2.11 and eth2.12. I found that even if I have one interface configured and using configuration option of dhcp-option=interface:eth2,6,10.0.1.1 instead of dhcp-option=6,10.0.1.1 I will not get DNS server in responses. Router IP BTW always correct with both variants of configuration. As for me it looks like a bug. Thanx for looking into it. Best regards, Taras Taranenko
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