95895 2005-06-12 13:56 0000 sys-libs/nss-mdns needed to make nscd work reliably with multicast-DNS (howl/mDNSresponder) 2005-12-20 23:20:52 0000 1 1 1 Unclassified Gentoo Linux Ebuilds unspecified All Linux RESOLVED FIXED EBUILD P2 enhancement --- 1 gentoo@spodhuis.org compnerd@gentoo.org joem@gentoo.org ladanyi@tmit.bme.hu sebastien.estienne@gmail.com gentoo@spodhuis.org 2005-06-12 13:56:21 0000 Given a local hostname of foo and a multicast DNS install (net-misc/howl in this case), it should be possible to "ping foo.local" and get a ping of the localhost. With nscd running, this fails for me. Stopping nscd allows it to work, restarting nscd causes it to stop again. I'm not familiar with how the nscd stuff hooks in to the libc resolution routines, but it seems to override /etc/host.conf with resolution based on /etc/nsswitch.conf. Installing a libnss_mdns in /lib/ and putting something in /etc/nsswitch.conf to cause it to be used fixes this for me. This is an ebuild for an nss-mdns found on the 'net. Please note that no security audit has been performed and this has been minimally tested on x86, with "stable x86" install (not ~x86). Reproducible: Always Steps to Reproduce: 1. emerge net-misc/howl; /etc/init.d/mDNSResponder start 2. ping foo.local (fails) 3. /etc/init.d/nscd stop; ping foo.local (succeeds) 4. /etc/init.d/nscd start; ping foo.local (fails) 5. /etc/init.d/nscd stop; ping foo.local (succeeds) Actual Results: Hostname resolution, as invoked by 'ping', fails to resolve mDNS requests in .local whilst nscd is running, unless an NSS module providing mDNS service is installed and configured. Installing this new module and adding 'mdns4' to the hosts: line in /etc/nsswitch.conf fixes things. # Copyright 1999-2005 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Header$ inherit eutils DESCRIPTION="Name Service Switch module for Multicast DNS" HOMEPAGE="http://0pointer.de/lennart/projects/nss-mdns/" SRC_URI="http://0pointer.de/lennart/projects/nss-mdns/${P}.tar.gz" LICENSE="GPL-2" SLOT="0" KEYWORDS="x86" IUSE="" src_compile() { econf --libdir=/lib emake || die "Failed to make" } src_install() { make DESTDIR=${D} install dodoc README LICENSE doc/README.html doc/style.css } vapier@gentoo.org 2005-06-12 14:47:37 0000 not interested in maintaining a new mdns module ephemient@gmail.com 2005-12-08 16:54:19 0000 Created an attachment (id=74356) sys-auth/nss-mdns-0.7.ebuild Here's an update; >=0.6 uses Avahi by default. vapier@gentoo.org 2005-12-12 20:54:51 0000 *** Bug 66295 has been marked as a duplicate of this bug. *** compnerd@gentoo.org 2005-12-20 23:20:52 0000 Added to portage. 74356 2005-12-08 16:54 0000 sys-auth/nss-mdns-0.7.ebuild nss-mdns-0.7.ebuild text/plain IyBDb3B5cmlnaHQgMTk5OS0yMDA1IEdlbnRvbyBGb3VuZGF0aW9uCiMgRGlzdHJpYnV0ZWQgdW5k ZXIgdGhlIHRlcm1zIG9mIHRoZSBHTlUgR2VuZXJhbCBQdWJsaWMgTGljZW5zZSB2MgojICRIZWFk ZXI6ICQKCkRFU0NSSVBUSU9OPSJOYW1lIFNlcnZpY2UgU3dpdGNoIG1vZHVsZSBmb3IgTXVsdGlj YXN0IEROUyIKSE9NRVBBR0U9Imh0dHA6Ly8wcG9pbnRlci5kZS9sZW5uYXJ0L3Byb2plY3RzL25z cy1tZG5zLyIKU1JDX1VSST0iJHtIT01FUEFHRX0ke1B9LnRhci5neiIKTElDRU5TRT0iR1BMLTIi ClNMT1Q9IjAiCktFWVdPUkRTPSJ+eDg2IgpJVVNFPSJhdmFoaSIKREVQRU5EPSJhdmFoaT8gKCBu ZXQtZG5zL2F2YWhpICkiCgpzcmNfY29tcGlsZSgpIHsKCWxvY2FsIG15b3B0cwoJdXNlIGF2YWhp ICYmCgkJbXlvcHRzPSIke215b3B0c30gLS1lbmFibGUtYXZhaGkiIHx8CgkJbXlvcHRzPSIke215 b3B0c30gLS1kaXNhYmxlLWF2YWhpIgoJZWNvbmYgJHtteW9wdHN9IHx8IGRpZSAiZWNvbmYgZmFp bGVkIgoJZW1ha2UgfHwgZGllICJlbWFrZSBmYWlsZWQiCn0KCnNyY19pbnN0YWxsKCkgewoJbWFr ZSBERVNURElSPSR7RH0gaW5zdGFsbCB8fCBkaWUKCWRvZG9jIFJFQURNRQp9Cg==