Am 16.03.2013 23:37, schrieb Garry T. Williams: > I occasionally hit this when transitioning to a VPN connection or > shutting one down: > > Mar 16 17:19:29 vfr NetworkManager[559]: <info> VPN connection 'cbeyond' (IP Config Get) complete. > Mar 16 17:19:29 vfr NetworkManager[559]: <info> Policy set 'Built-in Ethernet' (em1) as default for IPv4 routing and DNS. > Mar 16 17:19:29 vfr NetworkManager[559]: <info> DNS: starting dnsmasq... > Mar 16 17:19:29 vfr dnsmasq[740]: exiting on receipt of SIGTERM > Mar 16 17:19:29 vfr dnsmasq[31273]: failed to create listening socket for 127.0.0.1: Address already in use > Mar 16 17:19:29 vfr dnsmasq[31273]: FAILED to start up > Mar 16 17:19:30 vfr NetworkManager[559]: <info> VPN plugin state changed: started (4) > Mar 16 17:19:30 vfr dbus[610]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper) > Mar 16 17:19:30 vfr NetworkManager[559]: <warn> dnsmasq exited with error: Network access problem (address in use; permissions; etc) (2) > > It seems that NM kills the running dnsmasq and then restarts it. The > new instance sometimes fails to bind because the old instance hasn't > finished closing the port. > > My work-around is to: > > sudo systemctl start dnsmasq.service > > when I notice the failure. > How can I eliminate this race? systemd supports auto-restart of services and nobody knows why it is not used as default while i have it for ANY service since Fedora 15 in production use yes, it's a workaround but it should work without user interaction and since i avoid NetworkManager and use the classical "network.service" with a static config nor have installed NM on anymachine............. * FIRST: systemctl disable dnsmasq.service * create /etc/systemd/system/dnsmasq.service * systemctl daemon-reload * systemctl enable dnsmasq.service * systemctl restart dnsmasq.service [root@proxy:~]$ cat /etc/systemd/system/dnsmasq.service [Unit] Description=DNS caching server After=network.target network.service [Service] Type=forking EnvironmentFile=-/etc/sysconfig/network ExecStart=/usr/sbin/dnsmasq Restart=always RestartSec=1 [Install] WantedBy=multi-user.target
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