From: Marek Michalkiewicz To: Debian Bug Tracking System Subject: Bug#85426: default route uses wrong interface with the same IP address Package: ppp Version: 2.4.0f-1 Severity: wishlist The pppd "defaultroute" option, when the ppp0 interface comes up, seems to do the equivalent of "route add default gw $ip_address", and I think it should do the equivalent of "route add default dev ppp0" instead. In most normal cases this shouldn't matter (because each interface has its own unique IP address), but specifying the interface by name (not by its IP address) may be preferable if there is more than one interface with the same IP address. I have a dummy0 interface with the same IP address as that of ppp0. This makes it possible to connect to the box from the internal LAN using its normal hostname (even if ppp0 is down at the moment), and to run named (possibly started before ppp0 comes up) as non-root. Using the "defaultroute" option causes pppd to set up the default route via dummy0 (first device found with matching IP address), not ppp0. I've worked around this by disabling the pppd defaultroute option and creating a small shell script called /etc/ppp/ip-up.d/000defaultroute (run before 00ipmasq) with the following contents: #! /bin/sh set -e /sbin/route add default dev $PPP_IFACE This gets the default route right (no corresponding ip-down script is necessary - when ppp0 goes down, the route is removed automatically). Please consider at least documenting this workaround, as I think it may be useful to someone. Thanks, Marek -- System Information Debian Release: testing/unstable Architecture: i386 Kernel: Linux alf 2.2.19pre7 #1 Sat Jan 27 15:26:41 CET 2001 i586 Versions of packages ppp depends on: ii libc6 2.2.1-1 GNU C Library: Shared libraries an ii libpam-modules 0.72-12 Pluggable Authentication Modules f ii libpam0g 0.72-12 Pluggable Authentication Modules l ii netbase 4.05 Basic TCP/IP networking system ii sysvinit 2.78-4 System-V like init.