ref: 9a853e0d792a1e7fe218b43d373ea2760e3a2d34
parent: 10d74fec160b6a97c1c434dc35c48f176974fb55
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sat May 27 12:16:55 EDT 2023
ip/ipconfig: avoid refreshing /net/dns for non-primary interface when not updating /net/ndb, theres no new information for the dns resolver, so skip refreshing it. we still refresh /net/cs to notify it for added or removed interface.