Hi! I am running DNSMasq 2.71, compiled on Gentoo: net-dns/dnsmasq-2.71 USE="auth-dns conntrack dhcp dhcp-tools dnssec idn ipv6 nls tftp -dbus -lua -script (-selinux) -static"
My issue is, when my ppp-link goes down and re-establish a new connection after a few seconds due 24h disconnect, DNSMasq seems stop working. I can see, the process begins to run at 100% cpu usage and does not respond anymore. No DNS/DHCP/TFTP pakets are answered. The logging to /var/log also stop at that minute. The only solution is to killall -9 DNSMasq and restart the service again.. It this maybe something related to this? Changelog says, this should be fixed in 2.71? - Fix total DNS failure and 100% CPU use if cachesize set to zero, - regression introduced in 2.69. Thanks to James Hunt and - the Ubuntu crowd for assistance in fixing this. For example, this happened tonight: Jun 03 01:23:18 [pppd] No response to 3 echo-requests Jun 03 01:23:18 [pppd] Serial link appears to be disconnected. Jun 03 01:23:18 [pppd] Connect time 4413.9 minutes. [...] Jun 03 01:26:11 [pppd] Connect: ppp0 <--> enp11s0.7 [...] Jun 03 01:26:11 [pppd] PAP authentication succeeded [...] My pppd-link goes down and re-establish.. At the same time DNSmasq stops working and logging, but running at 100% cpu usage: [...] Jun 03 01:11:39 [dnsmasq-dhcp] RTR-ADVERT(tap0) XXXX:XX:XXXX:XX7b:: Jun 03 01:12:00 [dnsmasq-dhcp] RTR-ADVERT(wlp7s0) XXXX:XX:XXXX:XX2a:: Jun 03 01:14:40 [dnsmasq-dhcp] RTR-ADVERT(enp6s0) XXXX:XX:XXXX:XX40:: Jun 03 01:17:24 [dnsmasq-dhcp] RTR-ADVERT(enp5s0) XXXX:XX:XXXX:XX17:: Jun 03 01:18:03 [dnsmasq-dhcp] RTR-ADVERT(enp10s0) XXXX:XX:XXXX:XX80:: Jun 03 01:20:10 [dnsmasq-dhcp] RTR-ADVERT(wlp7s0) XXXX:XX:XXXX:XX2a:: Jun 03 01:20:48 [dnsmasq-dhcp] RTR-ADVERT(tap0) XXXX:XX:XXXX:XX7b:: Jun 03 01:23:24 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX80::, old prefix for enp10s0 Jun 03 01:23:24 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX40::, old prefix for enp6s0 Jun 03 01:23:24 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX17::, old prefix for enp5s0 Jun 03 01:23:24 [dnsmasq-dhcp] RTR-ADVERT(enp10s0) XXXX:XX:XXXX:XX80:: old prefix Jun 03 01:23:24 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX7b::, old prefix for tap0 Jun 03 01:23:24 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX2a::, old prefix for wlp7s0 Jun 03 01:23:24 [dnsmasq-dhcp] RTR-ADVERT(tap0) XXXX:XX:XXXX:XX7b:: old prefix Jun 03 01:23:24 [dnsmasq-dhcp] RTR-ADVERT(wlp7s0) XXXX:XX:XXXX:XX2a:: old prefix Jun 03 01:23:24 [dnsmasq-dhcp] RTR-ADVERT(enp6s0) XXXX:XX:XXXX:XX40:: old prefix Jun 03 01:23:24 [dnsmasq-dhcp] RTR-ADVERT(enp5s0) XXXX:XX:XXXX:XX17:: old prefix Jun 03 01:23:29 [dnsmasq-dhcp] RTR-ADVERT(tap0) XXXX:XX:XXXX:XX7b:: old prefix Jun 03 01:23:29 [dnsmasq-dhcp] DHCPv6, IP-Bereich XXXX:XX:XXXX:XX7b::10 -- XXXX:XX:XXXX:XX7b::49, Lease Time 1d, constructed for tap0 Jun 03 01:23:29 [dnsmasq-dhcp] DHCPv4-abgeleitete IPv6 Namen on XXXX:XX:XXXX:XX7b::, constructed for tap0 Jun 03 01:23:29 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX7b::, constructed for tap0 Jun 03 01:23:29 [dnsmasq-dhcp] RTR-ADVERT(tap0) XXXX:XX:XXXX:XX7b:: Jun 03 01:23:29 [dnsmasq-dhcp] Router-Advertisment on XXXX:XX:XXXX:XX7b::, old prefix for tap0 Jun 03 01:23:29 [dnsmasq-dhcp] RTR-ADVERT(tap0) XXXX:XX:XXXX:XX7b:: old prefix <-- At this point nothing is being logged any more. I don't know, how to debug this problem for me? Somebody has some idea? My config: http://pastebin.com/5vW5xCeB Conrad _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
