Re: what to check? no IPV6 pings between nodes on the same switch

Unfortunately I get the same results with rtsold enabled and the interface up. It doesn't seems related to teh switch since link-local ping work :/

Benoît
------- Original Message -------
On Monday, August 15th, 2022 at 11:41, Ronald Klop <ronald-lists@klop.ws> wrote:

> Set rtsold_enable="YES" in rc.conf and restart.
> Does that help?
>
> "
> DESCRIPTION
> rtsold is the daemon program to send ICMPv6 Router Solicitation messages
> on the specified interfaces. If a node (re)attaches to a link, rtsold
> sends some Router Solicitations on the link destined to the link-local
> scope all-routers multicast address to discover new routers and to get
> non link-local addresses.
>
> rtsold should be used on IPv6 hosts (non-router nodes) only.
> "
>
> Btw: accept_rtadv makes "rtsol" to run once on startup if you set it in rc.conf and use it to boot the machine. (BTW: for me this does not work well enough, so I run rtsold explicitly.) Setting accept_rtadv by ifconfig will not run rtsol.
>
> Regards,
> Ronald.
>
> Van: Benoit Chesneau <benoitc@enki-multimedia.eu>
> Datum: maandag, 15 augustus 2022 11:25
> Aan: Benoit Chesneau <benoitc@enki-multimedia.eu>
> CC: Ronald Klop <ronald-lists@klop.ws>, "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org>
> Onderwerp: Re: what to check? no IPV6 pings between nodes on the same switch
>
>> OK here is the weird but interesting thing. When I start to capture icmp6 packets using tcpdump `tcpdump -i ql0 icmp6` then ping6 starts to work. Even after stopping the capture. Any idea what could it be ?
>>
>> Benoît
>> ------- Original Message -------
>> On Monday, August 15th, 2022 at 10:50, Benoit Chesneau <benoitc@enki-multimedia.eu> wrote:
>>
>>> Hi,
>>>
>>> Thanks for the help :) The nodes can indeed ping each others using the link-local address. What does it means? I tested to set `accept_rtadv` using the ifconfig command without much success.
>>>
>>> Here are the ifconfigs, the prefix is the same for all To be sure, I replaced the content by <PREFIX> using sed.
>>>
>>> node 1:
>>>
>>> ```
>>> $ ifconfig ql0
>>> ql0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>> options=507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO>
>>> ether b4:7a:f1:7a:9c:10
>>> inet6 <PREFIX>::11 prefixlen 64
>>> inet6 fe80::b67a:f1ff:fe7a:9c10%ql0 prefixlen 64 scopeid 0x1
>>> media: Ethernet autoselect (25GBase-SR <full-duplex>)
>>> status: active  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>>> ```
>>>
>>> node 2:
>>>
>>> ```
>>> $ ifconfig ql0
>>> ql0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>> options=507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO>
>>> ether b4:7a:f1:7a:99:52
>>> inet6 <PREFIX>::12 prefixlen 64
>>> inet6 fe80::b67a:f1ff:fe7a:9952%ql0 prefixlen 64 scopeid 0x1
>>> media: Ethernet autoselect (25GBase-SR <full-duplex>)
>>> status: active  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>>> ```
>>>
>>> node 3
>>> ```
>>> ifconfig ql0
>>> ql0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>> options=507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO>
>>> ether b4:7a:f1:18:ff:d8
>>> inet6 <PREFIX>::13 prefixlen 64
>>> inet6 fe80::b67a:f1ff:fe18:ffd8%ql0 prefixlen 64 scopeid 0x1
>>> media: Ethernet autoselect (25GBase-SR <full-duplex>)
>>> status: active nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>>> ```
>>>
>>> ------- Original Message -------
>>> On Monday, August 15th, 2022 at 10:29, Ronald Klop <ronald-lists@klop.ws> wrote:
>>>
>>>> Hi,
>>>>
>>>> My rc.conf config has:
>>>> ifconfig_genet0_ipv6="inet6 accept_rtadv"
>>>>
>>>> Can you post the output of "ifconfig" and "ipfw show"?
>>>> Can you ping the link-local address of the other hosts?
>>>>
>>>> Regards.
>>>> Ronald.
>>>>
>>>> Van: Benoit Chesneau <benoitc@enki-multimedia.eu>
>>>> Datum: maandag, 15 augustus 2022 08:59
>>>> Aan: "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org>
>>>> Onderwerp: what to check? no IPV6 pings between nodes on the same switch
>>>>
>>>>> I have setup 3 nodes on a fresh Freebsd 13.1-RELEASE-p1. They have the same gateway and IPS are in same /64. All 3 nodes are on the same switch (mikrotik) and same vlan untagged.
>>>>>
>>>>> I can ping them from an external machine through the router/gateway but the nodes can't ping each others. When I run `ndp-a` it only return the gateway and the node ipv6 (+ their libks) but not the ips of the other nodes.
>>>>>
>>>>> Previously these nodes wee under linux and were able to ping each others.
>>>>>
>>>>> What could be the issue? What do I need to check?
>>>>>
>>>>> Configuration is pretty straightforward:
>>>>> ```
>>>>>
>>>>> hostname="node1.domain.tld"
>>>>>
>>>>> keymap="fr.macbook.kbd"
>>>>>
>>>>> ifconfig_ql0=""
>>>>>
>>>>> ifconfig_ql0_ipv6="inet6 <PREFIX>::11/64"
>>>>>
>>>>> ipv6_defaultrouter="<PREFIX>::1"
>>>>>
>>>>> sshd_enable="YES"
>>>>>
>>>>> ntpd_enable="YES"
>>>>>
>>>>> # Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
>>>>>
>>>>> dumpdev="AUTO"
>>>>>
>>>>> zfs_enable="YES"
>>>>>
>>>>> ```
>>>>> Others machines are `<PREFIX>::12`, `<PREFIX>::13`Sent from Proton Mail for iOS
>>>>>
>>>>> Benoît