Package: avahi-daemon Version: 0.6.23-3lenny1 Severity: normal When the avahi-daemon reflector is enabled, the daemon may copy RRSets containing link-local addresses (169.254.0.0/16, fe80::/10) to other interfaces, where they are patently useless. This sometimes manifests a problem whereby it is not possible to reach certain endpoints on the non-local network segments.
For example, AirPort Extreme devices like to advertise their link-local addresses together with any others it has: % dig @224.0.0.251 -p 5353 airport-extreme.local. ANY ; <<>> DiG 9.5.1-P1 <<>> @224.0.0.251 -p 5353 airport-extreme.local. ANY ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60456 ;; flags: qr aa; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;airport-extreme.local. IN ANY ;; ANSWER SECTION: AirPort-Extreme.local. 10 IN AAAA fe80::21b:63ff:fef5:93ab AirPort-Extreme.local. 10 IN A 10.0.1.151 AirPort-Extreme.local. 10 IN A 169.254.228.74 ;; Query time: 0 msec ;; SERVER: 10.0.1.151#5353(224.0.0.251) ;; WHEN: Wed Feb 25 18:36:49 2009 ;; MSG SIZE rcvd: 125 In this case 10.0.1.151 is the only address that is valid for reaching the device from any segment. When this RRSet is reflected onto non-local network segments, other hosts may try to reach the device using the link-local address(es) and fail. This happens, for example, with Apple's AirPort Utility which seems to rely on an address chosen at random from the available RRs. I think it would be better if avahi-daemon could filter RRSets to remove link-local addresses when reflecting them onto other network segments. Thanks. -- System Information: Debian Release: 5.0 APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Kernel: Linux 2.6.26-1-686 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages avahi-daemon depends on: ii adduser 3.110 add and remove users and groups ii bind9-host [host] 1:9.5.1.dfsg.P1-1 Version of 'host' bundled with BIN ii dbus 1.2.1-5 simple interprocess messaging syst ii libavahi-common3 0.6.23-3lenny1 Avahi common library ii libavahi-core5 0.6.23-3lenny1 Avahi's embeddable mDNS/DNS-SD lib ii libc6 2.7-18 GNU C Library: Shared libraries ii libcap2 2.11-2 support for getting/setting POSIX. ii libdaemon0 0.12-2lenny1 lightweight C library for daemons ii libdbus-1-3 1.2.1-5 simple interprocess messaging syst ii libexpat1 2.0.1-4 XML parsing C library - runtime li ii lsb-base 3.2-20 Linux Standard Base 3.2 init scrip Versions of packages avahi-daemon recommends: ii libnss-mdns 0.10-3 NSS module for Multicast DNS name Versions of packages avahi-daemon suggests: pn avahi-autoipd <none> (no description available) -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
