IPv6 alias do not respond from outside - resolved

[Marcelo Gondim]

Em 25/07/2014 20:39, Marcelo Gondim escreveu:
> Dear,
>
> I'm having the following problem:
>
> Host A (my network):
> ===================
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO> 
>
>         ether 00:1e:67:30:ea:27
>         inet 186.xxx.48.3 netmask 0xffffffe0 broadcast 186.xxx.48.31
>         inet6 fe80::21e:67ff:fe30:ea27%em0 prefixlen 64 scopeid 0x1
>         inet6 2805:xxxx:dead::3 prefixlen 64
>         inet 186.xxx.48.4 netmask 0xffffffff broadcast 186.xxx.48.4
>         inet 186.xxx.48.5 netmask 0xffffffff broadcast 186.xxx.48.5
>         inet6 2805:xxxx:dead::5 prefixlen 64
>         inet6 2805:xxxx:dead::4 prefixlen 64
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>         media: Ethernet autoselect (1000baseT <full-duplex>)
>         status: active
>
> Router (Internet):
> ===============
> vlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 
> 1500
>         options=303<RXCSUM,TXCSUM,TSO4,TSO6>
>         ether 00:1b:21:89:25:32
>         inet 186.xxx.48.1 netmask 0xffffffe0 broadcast 186.xxx.48.31
>         inet6 fe80::21b:21ff:fe89:2532%vlan0 prefixlen 64 scopeid 0x10
>         inet6 2805:xxxx:dead::1 prefixlen 64
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>         media: Ethernet autoselect (10Gbase-SR <full-duplex>)
>         status: active
>         vlan: 3081 parent interface: ix0
>
> Host B (Datacenter OVH):
> ======================
> eth0      Link encap:Ethernet  HWaddr 00:27:0e:36:67:ae
>           inet addr:91.xxx.115.215  Bcast:91.xxx.115.255 
> Mask:255.255.255.0
>           inet6 addr: fe80::227:eff:fe36:67ae/64 Scope:Link
>           inet6 addr: 2001:xxxx:1:aad7::1/64 Scope:Global
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:680611577 errors:0 dropped:115467 overruns:0 frame:0
>           TX packets:410997111 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:929626301412 (865.7 GiB)  TX bytes:28858569748 
> (26.8 GiB)
>
>
>
> If I try to ping the origin Host Bto destination 2805:xxxx:dead::3, I 
> get an answer correctly:
>
> (hostb)# ping6 2805:xxxx:dead::3
> PING 2805:xxxx:dead::3(2805:xxxx:dead::3) 56 data bytes
> 64 bytes from 2805:xxxx:dead::3: icmp_seq=1 ttl=55 time=219 ms
> 64 bytes from 2805:xxxx:dead::3: icmp_seq=2 ttl=55 time=218 ms
> 64 bytes from 2805:xxxx:dead::3: icmp_seq=3 ttl=55 time=219 ms
> 64 bytes from 2805:xxxx:dead::3: icmp_seq=4 ttl=55 time=218 ms
>
> But it does not ping 2805:xxxx:dead::4 and 2805:xxxx:dead::5:
>
> (hostb)# ping6 2805:xxxx:dead::4
> PING 2805:xxxx:dead::4(2805:xxxx:dead::4) 56 data bytes
> From 2001:xxxx:2001:1001::96 icmp_seq=2 Destination unreachable: 
> Address unreachable
> From 2001:xxxx:2001:1001::96 icmp_seq=8 Destination unreachable: 
> Address unreachable
>
> Now if I do a ping from the router to Host A, it goes to work:
>
> (router)# ping6 2805:xxxx:dead::4
> PING6(56=40+8+8 bytes) 2805:xxxx:dead::1 --> 2805:xxxx:dead::4
> 16 bytes from 2805:xxxx:dead::4, icmp_seq=0 hlim=64 time=13.550 ms
> 16 bytes from 2805:xxxx:dead::4, icmp_seq=1 hlim=64 time=7.776 ms
>
> (hostb)# ping6 2805:xxxx:dead::4
> PING 2805:xxxx:dead::4(2805:xxxx:dead::4) 56 data bytes
> 64 bytes from 2805:xxxx:dead::4: icmp_seq=1 ttl=56 time=219 ms
> 64 bytes from 2805:xxxx:dead::4: icmp_seq=2 ttl=56 time=218 ms
> 64 bytes from 2805:xxxx:dead::4: icmp_seq=3 ttl=56 time=219 ms
>
> Why work now?
>
> FreeBSD xxxxx 10.0-STABLE FreeBSD 10.0-STABLE #10 r267839: Thu Jul 10 
> 15:35:04 BRT 2014 root at xxxxx:/usr/obj/usr/src/sys/GONDIM  amd64
>
> Thanks and best regards,
> Gondim
>
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>
Dear,

The problem was only one Firewall rule.

Sorry.
Gondim