[OpenWrt-Devel] [LEDE-DEV] glibc finally fixes /etc/resolv.conf handling

[Philip Prindeville]

Previous email was a little premature, but more news on the subject:

https://sourceware.org/bugzilla/show_bug.cgi?id=984

from what I can tell, MUSL reads the resolv.conf file on every call to __lookup_name()… so it shouldn’t have this issue.

Then again, it’s a problem that’s more likely to afflict clients (especially roaming WiFi clients) being an LEDE router than LEDE itself.

-Philip



> On Jul 3, 2017, at 2:04 PM, Philip Prindeville <philipp_subx at redfish-solutions.com> wrote:
> 
> For everyone who has ever wondered why they need to stop and restart long running services when they move from one network to another (as is common for laptops using Wifi that are roaming around), this can be quite vexing.
> 
> The reason was that /etc/resolv.conf would get rewritten by DHCP when you acquired a new DHCP lease, but programs which were running wouldn’t have sufficient knowledge to force the resolver to re-initialize itself (and arguably, they shouldn’t have to… it should just work).
> 
> This FINALLY (after many years) got fixed today:
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=984
> 
> https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=aef16cc8a4c670036d45590877d411a97f01e0cd
> 
> So, hopefully that will make life easier for people who support their WiFi users and will no longer have to say, “Have you tried stopping and restarting the service?”
> 
> https://www.youtube.com/watch?v=PtXtIivRRKQ
> 
> Woot woot!
> 
> -Philip
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