Date: Tue, 20 Nov 2018 10:29:13 -0500 From: Hyun Hwang <hyun@caffeinated.codes> To: freebsd-net@freebsd.org Subject: dhclient.conf - using both prepend and append on domain-name-servers ignores prepend line? Message-ID: <1542727753.2153805.1583287672.158E5AFF@webmail.messagingengine.com>
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Hi, I'm poking around dhclient.conf to see if I can get dnscrypt-proxy to co-exist with captive portals. I've set an alias of 127.0.0.2 to interface lo0 then set dnscrypt-proxy to run on the address. Then I've added the following lines to dhclient.conf: ``` # /etc/dhclient.conf # dnscrypt-proxy2 prepend domain-name-servers 127.0.0.2; # Backups append domain-name-servers 1.1.1.1, 1.0.0.1; ``` I expected the above addition yield the following in resolv.conf: ``` search some-search-domain.com nameserver 127.0.0.2 nameserver [SOME_DHCP_SERVER_SET_DNS_IP1_HERE] nameserver [SOME_DHCP_SERVER_SET_DNS_IP2_HERE] nameserver 1.1.1.1 nameserver 1.0.0.1 ``` However, the actual result is that the dhclient completely ignored the prepend option: ``` search some-search-domain.com nameserver [SOME_DHCP_SERVER_SET_DNS_IP1_HERE] nameserver [SOME_DHCP_SERVER_SET_DNS_IP2_HERE] nameserver 1.1.1.1 nameserver 1.0.0.1 ``` Are the prepend and append options mutually exclusive or are they working in a last-to-appear-wins manner? I couldn't find this behavior being mentioned in any of the man pages. Any lead would be appreciated. Thanks, -- Hyun Hwang
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