[Dnsmasq-discuss] Fritzbox and frequent router advertisments

Simon Kelley simon at thekelleys.org.uk
Wed Jan 14 20:31:14 GMT 2015


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Dnsmasq and avahi are reacting to the prefix2003:57:e342:3800:: which
is being alternately added to enp1s0 and then 10 seconds later
deprecated, then added again deprecated again.


Find out what's causing that, and you'll have found the problem.



Cheers,

Simon.

On 14/01/15 19:41, Robert M. Albrecht wrote:
> Hi,
> 
> I using a Fritzbox and a dualstack internet connection (Deutsche
> Telekom).
> 
> Fritzbox is providing router advertisments with rfc5006 dns. 
> Fritzbopx is running stateless dhcpv6 with IA_P but no IA_NA.
> 
> I have running dnsmasq 2.72 on Fedora 21.
> 
> My Mac and Linux boxes are happy, but my Windows machines are very
> unhappy.
> 
> VPN tunnels on these Windows machines are extremly unrealiable,
> when dnsmasq is running. If I stop dnsmasq, everything is ok.
> 
> In my logs I see lot's of these, and I'm unsure if this might be
> the problem.
> 
> Looks like dnsmasq is frequently contructing and deconstructing
> the network interface ?
> 
> Avahi seems to think the interface is going up and down. But why ?
> The address does not change ?
> 
> cu romal
> 
> 
> Jan 14 20:27:28 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:4d00:: Jan 14 20:27:28 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14 20:27:28 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) fde7:831a:b4ef:1:: Jan 14
> 20:27:28 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:3800:: old prefix Jan 14 20:27:28 zerberus
> dnsmasq-dhcp[10775]: DHCPv6 stateless on 2003:57:e342:3800::,
> constructed for enp1s0 Jan 14 20:27:28 zerberus
> dnsmasq-dhcp[10775]: router advertisement on 2003:57:e342:3800::,
> constructed for enp1s0 Jan 14 20:27:28 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 2003:57:e342:4d00:: Jan 14
> 20:27:28 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:3800:: Jan 14 20:27:28 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14 20:27:28 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) fde7:831a:b4ef:1:: Jan 14
> 20:27:28 zerberus avahi-daemon[501]: Registering new address record
> for 2003:57:e342:3800:20d:b9ff:fe36:6884 on enp1s0.*. Jan 14
> 20:27:38 zerberus dnsmasq-dhcp[10775]: router advertisement on 
> 2003:57:e342:3800::, old prefix for enp1s0 Jan 14 20:27:38 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 2003:57:e342:4d00:: Jan 14
> 20:27:38 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e341:b300:: Jan 14 20:27:38 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) fde7:831a:b4ef:1:: Jan 14 20:27:38 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 2003:57:e342:3800:: old
> prefix Jan 14 20:27:38 zerberus avahi-daemon[501]: Withdrawing
> address record for 2003:57:e342:3800:20d:b9ff:fe36:6884 on enp1s0. 
> Jan 14 20:27:38 zerberus avahi-daemon[501]: Registering new
> address record for 2003:57:e342:3800:20d:b9ff:fe36:6884 on
> enp1s0.*. Jan 14 20:27:38 zerberus dnsmasq-dhcp[10775]: DHCPv6
> stateless on 2003:57:e342:3800::, constructed for enp1s0 Jan 14
> 20:27:38 zerberus dnsmasq-dhcp[10775]: router advertisement on 
> 2003:57:e342:3800::, constructed for enp1s0 Jan 14 20:27:38
> zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:4d00:: Jan 14 20:27:38 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e342:3800:: Jan 14 20:27:38 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14
> 20:27:38 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> fde7:831a:b4ef:1:: Jan 14 20:27:48 zerberus avahi-daemon[501]:
> Withdrawing address record for 2003:57:e342:3800:20d:b9ff:fe36:6884
> on enp1s0. Jan 14 20:27:48 zerberus dnsmasq-dhcp[10775]: router
> advertisement on 2003:57:e342:3800::, old prefix for enp1s0 Jan 14
> 20:27:48 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:4d00:: Jan 14 20:27:48 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14 20:27:48 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) fde7:831a:b4ef:1:: Jan 14
> 20:27:48 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:3800:: old prefix Jan 14 20:27:48 zerberus
> avahi-daemon[501]: Registering new address record for
> 2003:57:e342:3800:20d:b9ff:fe36:6884 on enp1s0.*. Jan 14 20:27:48
> zerberus dnsmasq-dhcp[10775]: DHCPv6 stateless on 
> 2003:57:e342:3800::, constructed for enp1s0 Jan 14 20:27:48
> zerberus dnsmasq-dhcp[10775]: router advertisement on 
> 2003:57:e342:3800::, constructed for enp1s0 Jan 14 20:27:48
> zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:4d00:: Jan 14 20:27:48 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e342:3800:: Jan 14 20:27:48 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14
> 20:27:48 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> fde7:831a:b4ef:1:: Jan 14 20:27:58 zerberus dnsmasq-dhcp[10775]:
> router advertisement on 2003:57:e342:3800::, old prefix for enp1s0 
> Jan 14 20:27:58 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:4d00:: Jan 14 20:27:58 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14 20:27:58 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) fde7:831a:b4ef:1:: Jan 14
> 20:27:58 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:3800:: old prefix Jan 14 20:27:58 zerberus
> avahi-daemon[501]: Withdrawing address record for
> 2003:57:e342:3800:20d:b9ff:fe36:6884 on enp1s0. Jan 14 20:27:58
> zerberus dnsmasq-dhcp[10775]: DHCPv6 stateless on 
> 2003:57:e342:3800::, constructed for enp1s0 Jan 14 20:27:58
> zerberus dnsmasq-dhcp[10775]: router advertisement on 
> 2003:57:e342:3800::, constructed for enp1s0 Jan 14 20:27:58
> zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> 2003:57:e342:4d00:: Jan 14 20:27:58 zerberus dnsmasq-dhcp[10775]:
> RTR-ADVERT(enp1s0) 2003:57:e342:3800:: Jan 14 20:27:58 zerberus
> dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 2003:57:e341:b300:: Jan 14
> 20:27:58 zerberus dnsmasq-dhcp[10775]: RTR-ADVERT(enp1s0) 
> fde7:831a:b4ef:1:: Jan 14 20:27:58 zerberus avahi-daemon[501]:
> Registering new address record for
> 2003:57:e342:3800:20d:b9ff:fe36:6884 on enp1s0.*.
> 
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> mailing list Dnsmasq-discuss at lists.thekelleys.org.uk 
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> 

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