On 2026-09-23 11:56:15 +0200, Marco Moock wrote: > Am 23.09.26 um 11:30 schrieb Vincent Lefevre: > > On 2026-09-22 15:37:59 +0200, Marco Moock wrote: > > > Am 22.09.26 um 11:40 schrieb Vincent Lefevre: > > > > On 2026-09-21 12:06:03 +0200, Marco Moock wrote: > > > > > Am 21.09.26 um 03:00 schrieb Vincent Lefevre: > > > > > > On 2026-09-20 09:23:48 +0200, Marco Moock wrote: > > > > > > > Am 19.09.26 um 23:40 schrieb Vincent Lefevre: > > > > > > > > In any case, I don't see why IPv6 support in the kernel matters > > > > > > > > for nscd. I don't see any reason why nscd would do an IPv6 > > > > > > > > connection; that's useless for name resolving. > > > > > > > > > > > > > > nscd is only a cache for libc, it does not do any lookups. The > > > > > > > sources > > > > > > > defined in nsswitch.conf do the lookups. > > > > > > > > > > > > This is incorrect: when nscd is running, nsswitch.conf is not > > > > > > used at all by the program that calls getaddrinfo! There's only > > > > > > a connection to "/var/run/nscd/socket". > > > > > > > > > > It still does not do any DNS lookups, it uses the libraries in listed > > > > > in > > > > > nsswitch.conf. > > > > > > > > This is still part of the nscd process. > > > > > > I a quite sure it isn't. But feel free to ask at the libc mailing lists, > > > there are the people who developed this. > > > > So, you think that the nscd process contacts another daemon? > > It is part of libc and it most likely (I haven't checked, feel free to ask > at their mailing lists) calld other components, e.g. the libnss libraries. > :-)
Libraries are part of the same process. > > > > > If they handle SERVFAIL improperly, it is not nscd's fault. > > > > > > > > I don't see how this is related to IPv6 support in the kernel. > > > > > > It might, as a system with IPv6 support disabled will most likely never as > > > for AAAA, which might change the (probably faulty) behavior. > > > > What do you mean? > > If the kernel support for IPv6 is disabled, certain applications might stop > trying to open IPv6 connections at all, so no AAAA queries. This is incredible! Kernel support for IPv6 was disabled precisely because one does NOT want IPv6 connections! And no AAAA queries would be a benefit too (but tests show that disabling IPv6 support does not affect DNS queries). It seems that you forgot my issue: I complained of a missing IPv4 address, not a missing IPv6 address. So I still don't see why disabling IPv6 support would be the cause of my issue. -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)
