Comment 19 for bug 1624320

I've been struggling with this issue... It seems I have to append the localdomain to my local names for the resolution to work :

nslookup somename : SERVFAIL, 127.0.0.53 didn't proxy to my router
nslookup somename.localdomain : OK, answer from my router

Why somename request isn't forwarded to my router?

Link 2 (eth0)
      Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
         DNS Servers: 192.168.1.200
          DNS Domain: localdomain

I'm ok for some proxying to take place if that proves useful but so far it's only been a PITA for me so I disabled it following Vincent's answer.