Your message dated Thu, 12 Jan 2017 23:04:17 +0000 with message-id <[email protected]> and subject line Bug#851180: fixed in nss-mdns 0.10-8 has caused the Debian Bug report #851180, regarding Installing libnss-resolve before libnss-mdns breaks mDNS name resolution to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 851180: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851180 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: libnss-resolve Version: 232-6 Severity: serious Justification: Breaks another package Hi! A freshly installed Debian Stretch system will have a /etc/nsswitch.conf like this (see libc-bin's postinst and/or /usr/share/libc-bin/nsswitch.conf): # /etc/nsswitch.conf # # Example configuration of GNU Name Service Switch functionality. # If you have the `glibc-doc-reference' and `info' packages installed, try: # `info libc "Name Service Switch"' for information about this file. passwd: compat group: compat shadow: compat gshadow: files hosts: files dns networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis Installing libnss-resolve makes these changes: --- nsswitch.conf 2016-12-04 15:16:42.701978711 +0100 +++ /etc/nsswitch.conf 2016-12-04 15:16:51.965961200 +0100 @@ -9,7 +9,7 @@ shadow: compat gshadow: files -hosts: files dns +hosts: files resolve [!UNAVAIL=return] dns networks: files protocols: db files If the user then installs for example the "gnome" meta package, libnss-mdns and libnss-myhostname will be installed as well because of these dependencies/recommendations: gnome -> avahi-daemon -> libnss-mdns gnome -> gnome-core -> gnome-control-center -> libnss-myhostname This results in the following hosts line: hosts: files resolve [!UNAVAIL=return] mdns4_minimal [NOTFOUND=return] dns myhostname However, because of the "[!UNAVAIL=return]" introduced with [0], nothing after "resolve" will actually be tried. This is mostly harmless, since "resolve" provides a superset of "dns" and "myhostname", but it breaks mDNS as resolved currently does not resolve mDNS names like "foo.local". Please note, that a) This bug depends on the order of package installations. Installing libnss-resolve *AFTER* everything else will avoid the problem. b) I think the rationale for the change made in [0] is sound, so simply reverting the change is not a solution. IMHO the best solution would be to a) Activate the mDNS support in resolved [1] if possible. b) Talk to the GNOME/Avahi maintainers and make them recommend libnss- resolve instead of the others c) Eventually remove libnss-mdns and libnss-myhostname from Debian as both aren't really maintained anymore and have been superseded by libnss-resolve. Best regard Alexander Kurtz [0] https://anonscm.debian.org/cgit/pkg-systemd/systemd.git/commit/?id=5e0095416366eb86590d6e31242097ded5201b3a [1] https://github.com/systemd/systemd/blob/master/src/resolve/resolved-mdns.c
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--- Begin Message ---Source: nss-mdns Source-Version: 0.10-8 We believe that the bug you reported is fixed in the latest version of nss-mdns, which is due to be installed in the Debian FTP archive. A summary of the changes between this version and the previous one is attached. Thank you for reporting the bug, which will now be closed. If you have further comments please address them to [email protected], and the maintainer will reopen the bug report if appropriate. Debian distribution maintenance software pp. Simon McVittie <[email protected]> (supplier of updated nss-mdns package) (This message was generated automatically at their request; if you believe that there is a problem with it please contact the archive administrators by mailing [email protected]) -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Format: 1.8 Date: Thu, 12 Jan 2017 22:11:47 +0000 Source: nss-mdns Binary: libnss-mdns Architecture: source Version: 0.10-8 Distribution: unstable Urgency: medium Maintainer: Utopia Maintenance Team <[email protected]> Changed-By: Simon McVittie <[email protected]> Description: libnss-mdns - NSS module for Multicast DNS name resolution Closes: 500478 782281 782282 851180 Changes: nss-mdns (0.10-8) unstable; urgency=medium . * debian/gbp.conf: use DEP-14 branch names (debian/master and upstream/latest) * Standards-Version: 3.9.8 (no changes needed) * libnss-mdns.postinst: remove special code to handle upgrades from ancient versions (all were older than squeeze) * libnss-mdns.postinst: configure libnss-mdns before libnss-resolve (mitigates: #846944, Closes: #851180) * libnss-mdns.postinst: shuffle libnss-mdns before libnss-resolve during upgrade if necessary * debian/tests: add autopkgtests for the interaction between libnss-mdns and libnss-resolve * debian/rules: enable bindnow hardening * Bump debhelper compat level to 10 - do not explicitly use autoreconf, it is now the default * debian/rules: FTBFS if files are built but not installed * libnss-mdns.postrm: do not deconfigure the module until the package is purged (Closes: #500478, #782281, #782282) - debian/tests/nss-behaviour: verify that the glibc < 2.11 bug that caused #534304 has been fixed, so leaving unavailable NSS modules in /etc/nsswitch.conf is harmless - debian/tests: add autopkgtests for #500478, #782281, #782282 Checksums-Sha1: fd262c706e8061590989d7bddfd1cb5cbec865b9 2071 nss-mdns_0.10-8.dsc 22a6cfd9c73d405cdbbd6dcbedaf48e498b8bbdb 11996 nss-mdns_0.10-8.debian.tar.xz Checksums-Sha256: 37db38a5d6fbb6b13da34fdaf38b9f68f8464c139dd3c4aa0ee5529b45e6adf5 2071 nss-mdns_0.10-8.dsc 1ae0914b48a3bd4f1d4c6c69e5fa7594529f54451ae6cc02abdcbeb70a3a36ff 11996 nss-mdns_0.10-8.debian.tar.xz Files: 5b0ea4eccc1f5f9b62a9d5439e5bb860 2071 admin optional nss-mdns_0.10-8.dsc bc17a13a00eebae8a0aaa656bf59446c 11996 admin optional nss-mdns_0.10-8.debian.tar.xz -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEE2pjyXAhxxJpZ6v8sTej/KmPHzJAFAlh4BWoACgkQTej/KmPH zJBEHA//RklH1UcyHFbG1sbGMgncjlfQGeUFHurdvmMNP40Ls6uplI+GykkguwZg Fd++oboI5Uzw+aagkof3MAs5xEEJ2YHPuU0LNgSOoyJUbKzOwdtfO1REGwH4ns/3 AWoebyIaUEZND3WSeletnHkTdyG0RwrJh/6PM7xjsDMCPjEStteqCYgBg8txY97n 7AehcQNN4hq3C7czXYKZR0KNpfFB3c++3PR5j0CY3IS60TRSoK2Wpmpc5gykAdEx ctfP+3yeJpGZVZe0rqAdX4CyVNMx5EmkocBP7iLD/fMVQBdacdlHoYNDMuXzycZI ZVMQNOgOjmd9dMK3xChsWdby99ZPtnucr32DbZINNMfWTvTu1gilHBGaBdwpo+Wv vHMJtafJ5HZXsdVeQWWlP91bc/TrWW5bEd9af0aJULLIOdvZswwLKC41BsyrWkey GqSgMBRIUYWKxWwQ/cm3vrjw8xofzgSdCW4pSGqdpgEz2omA750eiK1IyP5WnHW7 re0DbcE6h19dbeoGYLY9wyS4zvgbNzZjRZZNcZjA3PGa1dFb/pz5OP7WHQKtU7nL P8XJtaThH6BDxJUCertaBew1xoZtVEd/IasVexjvDvmqoO68vzlITX+3HHZqzvMX lto019piB6H6d/rSQ9d/mCSn/WUSxBXXrEIxrSweERGkUmhWOgI= =BNZl -----END PGP SIGNATURE-----
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