[Fli4l_dev] Problem mit chrony und ipv6

[Stefan Puschek]

Hallo Leute,

mein Router kann ipv6, chrony lief mit ipv4 seit Jahren ohne Probleme, 
aber jetzt meckert mein eisfair wenn er sich die aktuelle Zeit holen 
soll (Paket netdate):

der Router:
stan 4.0.0-r55493-testing # ip addr show
...
2: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state 
UP group default qlen 1000
     link/ether 00:0d:b9:1c:1a:2c brd ff:ff:ff:ff:ff:ff
     inet 192.168.6.1/24 brd 192.168.6.255 scope global br0
        valid_lft forever preferred_lft forever
     inet6 2003:ca:c3c6:6e01::1/64 scope global dynamic
        valid_lft 14139sec preferred_lft 1539sec
     inet6 fe80::20d:b9ff:fe1c:1a2c/64 scope link
        valid_lft forever preferred_lft forever
...

stan 4.0.0-r55493-testing # chronyc tracking
Reference ID    : 2A88AE69 (stormwind.eastern-kingdoms.azeroth.wow-data.net)
Stratum         : 3
Ref time (UTC)  : Thu Apr 18 16:04:42 2019
System time     : 0.000106029 seconds fast of NTP time
Last offset     : +0.000016565 seconds
RMS offset      : 0.000182267 seconds
Frequency       : 119.481 ppm slow
Residual freq   : -0.000 ppm
Skew            : 0.012 ppm
Root delay      : 0.020680608 seconds
Root dispersion : 0.019567704 seconds
Update interval : 2057.3 seconds
Leap status     : Normal
stan 4.0.0-r55493-testing #

Der eisfair-Server:
barbrady # ifconfig
eth0      Link encap:Ethernet  HWaddr 70:71:BC:4B:23:38
           inet addr:192.168.6.7  Bcast:192.168.6.255  Mask:255.255.255.0
           inet6 addr: fe80::7271:bcff:fe4b:2338/64 Scope:Link
           inet6 addr: 2003:ca:c3c6:6e01:7271:bcff:fe4b:2338/64 Scope:Global
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:757284 errors:0 dropped:0 overruns:0 frame:0
           TX packets:695790 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:497390573 (474.3 Mb)  TX bytes:722883736 (689.3 Mb)
           Interrupt:45 Base address:0xe000

im setup / Paket netdate:
Syncing time using timeserver(s) 'stan.southpark.lan':
Trying 2003:ca:c3c6:6e01::1...
netdate: read: Connection refused
Connection with udp to stan.southpark.lan failed.
Press ENTER to continue

wenn ich statt stan.southpark.lan die ipv4 des Routers 192.168.6.1 
eintrage, dann klappts

der Server kann den Router ping6en
barbrady # ping6 stan
PING stan(stan.southpark.lan (2003:ca:c3c6:6e01::1)) 56 data bytes
64 bytes from stan.southpark.lan (2003:ca:c3c6:6e01::1): icmp_seq=1 
ttl=64 time=3.47 ms
...

Warum rejected der Router die Anfrage des Servers bei ipv6?

am Paketfilter sollte es doch nicht liegen:
PF6_INPUT_POLICY='REJECT'
PF6_INPUT_ACCEPT_DEF='yes'
PF6_INPUT_LOG='no'
#PF6_INPUT_LOG_LIMIT='3/minute:5'
#PF6_INPUT_REJ_LIMIT='1/second:5'
#PF6_INPUT_UDP_REJ_LIMIT='1/second:5'
PF6_INPUT_N='3'
PF6_INPUT_1='[fe80::0/10] ACCEPT'
PF6_INPUT_2='IPV6_NET_1 ACCEPT'
PF6_INPUT_3='IPV6_NET_2 ACCEPT'

Wer weiss Rat?

Groetjes
Stefan