Hi,
I'm running IPv6 on my LAN interface and I'm experiencing some
weird IPv6 Router advertisement issues. When I look at at Router
Advertisement Daemon configuration, only the prefix and the DNS
domain should be sent:
# Automatically Generated, do not edit
# Generated config for dhcp6 delegation from wan on lan
interface em0 {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
AdvLinkMTU 1500;
AdvOtherConfigFlag on;
prefix 2a02:168:9800::/64 {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
DNSSL lan.dogan.ch { }
Unfortunately, a Windows 7 client configures the pfsense address
as the DNS server (sorry, it's in German):
Ethernet-Adapter LAN-Verbindung:
Verbindungsspezifisches DNS-Suffix: home
Beschreibung. . . . . . . . . . . : vmxnet3 Ethernet Adapter
Physikalische Adresse . . . . . . : 00-0C-29-F9-24-1F
DHCP aktiviert. . . . . . . . . . : Nein
Autokonfiguration aktiviert . . . : Ja
IPv6-Adresse. . . . . . . . . . . :
xxxx:xxx:xxxx:0:7dec:f195:8510:8892(Bevorzugt)
Temporäre IPv6-Adresse. . . . . . :
xxxx:xxx:xxxx:0:3045:c28a:e709:8662(Bevorzugt)
Verbindungslokale IPv6-Adresse . : fe80::7dec:f195:8510:8892%11(Bevorzugt)
IPv4-Adresse . . . . . . . . . . : 192.168.42.180(Bevorzugt)
Subnetzmaske . . . . . . . . . . : 255.255.255.0
Standardgateway . . . . . . . . . : fe80::1:1%11
192.168.42.1
DHCPv6-IAID . . . . . . . . . . . : 234884137
DHCPv6-Client-DUID. . . . . . . . : xx-xx-xx-xx-xx-xx-CC-69-00-0C-29-F9-24-1F
DNS-Server . . . . . . . . . . . : xxxx:xxx:xxxx:0:20c:29ff:fe87:1d76
192.168.42.178
192.168.42.158
NetBIOS über TCP/IP . . . . . . . : Aktiviert
Suchliste für verbindungsspezifische DNS-Suffixe:
home
And the router advirtesement package looks fine so far:
10:47:55.267792 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 88)
fe80::1:1 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 88
hop limit 64, Flags [other stateful], pref medium, router lifetime 30s,
reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): xxxx:xxx:xxxx::/64, Flags
[onlink, auto, router], valid time 86400s, pref. time 14400s
0x0000: 40e0 0001 5180 0000 3840 0000 0000 xxxx
0x0010: xxxx xxxx 0000 0000 0000 0000 0000
dnssl option (31), length 24 (3): lifetime 10s, domain(s):
lan.dogan.ch.
0x0000: 0000 0000 000a 036c 616e 0564 6f67 616e
0x0010: 0263 6800 0000
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
source link-address option (1), length 8 (1): 00:0c:29:87:1d:76
0x0000: 000c 2987 1d76
I'm wondering now, why the pfsense router address is set as a DNS
server, while there is no DNS forwarder or DNS resolver running
there. I've also noticed, that if I specify IPv6 DNS server
addresses for pfsense, they are set in the radv.conf, but the
client (Windows 7 and Android 5.1.1) are trying to use the
default gateway as a DNS server.
Well, I think this behaviour isn't right and probably there is
something wrong here.
Ihsan
--
[email protected] http://blog.dogan.ch/
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