IPv6 forwarding funktioniert nicht

Vengance

New Member
Hallo,

Ich habe eine VM die auch über IPv6 nach außen kommunizieren soll.

Da es dabei aber zu Problemen kommt, habe ich auf dem Hostsystem den Traffic mittels tcdump angesehen, während ich in der VM Google angepingt habe.

Dabei wurde folgende Ausgabe geliefert:
Code:
tcpdump -i vmbr0 -vv ip6 

13:03:33.445124 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) payload length: 64) 2001:xxxx:1:b813:03:33.445124 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) payload length: 64) 2001:xxxx:1:b8

13:03:33.445124 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 497
13:03:33.445147 IP6 (flowlabel 0x714fe, hlim 63, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 497
13:03:34.473103 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 498
13:03:34.473113 IP6 (flowlabel 0x714fe, hlim 63, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 498
13:03:34.647102 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 
32) fe80::2ff:ffff:feff:fffd > ff02::1:ff00:6: [icmp6 sum ok] ICMP6, 
neighbor solicitation, length 32, who has 2001:xxxx:1:b80c::6
13:03:34.647172 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 
32) 2001:xxxx:1:b80c::6 > fe80::2ff:ffff:feff:fffd: [icmp6 sum ok] 
ICMP6, neighbor advertisement, length 32, tgt is 2001:xxxx:1:b80c::6, 
Flags [solicited, override]
13:03:35.493132 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 499
13:03:35.493149 IP6 (flowlabel 0x714fe, hlim 63, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 499
13:03:36.517138 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 500
13:03:36.517163 IP6 (flowlabel 0x714fe, hlim 63, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 500
13:03:37.541115 IP6 (flowlabel 0x714fe, hlim 64, next-header ICMPv6 (58) 
payload length: 64) 2001:xxxx:1:b80c::6 > par10s21-in-x0e.1e100.net: 
[icmp6 sum ok] ICMP6, echo request, seq 501
Die Requests werden scheinbar richtig über das Hostsystem weitergeleitet, nur scheinbar nicht wieder "zurück" in die VM.
IPv6 Forwarding ist aktiviert, siehe sysctl Ausgabe.

Hat jemand eine Idee woran es liegen kann?


Code:
sysctl -p
net.ipv4.ip_forward = 1
net.ipv6.conf.all.forwarding = 1
net.ipv6.conf.all.autoconf = 0
net.ipv6.conf.default.autoconf = 0
net.ipv6.conf.vmbr0.autoconf = 0
net.ipv6.conf.all.accept_ra = 0
net.ipv6.conf.default.accept_ra = 0
net.ipv6.conf.vmbr0.accept_ra = 0
net.ipv6.conf.vmbr0.accept_ra = 0
net.ipv6.conf.vmbr0.autoconf = 0
net.ipv6.conf.default.proxy_ndp = 1
net.ipv6.conf.all.proxy_ndp = 1
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.all.forwarding = 1
net.ipv6.conf.all.accept_ra_defrtr = 0
net.ipv6.conf.default.accept_ra_defrtr = 0
net.ipv6.conf.vmbr0.accept_ra_defrtr = 0
net.ipv6.conf.all.accept_ra_pinfo = 0
net.ipv6.conf.default.accept_ra_pinfo = 0
net.ipv6.conf.vmbr0.accept_ra_pinfo = 0
 
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