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 <[email protected]> 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 <[email protected]> > 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 <[email protected]> >> Datum: maandag, 15 augustus 2022 08:59 >> Aan: "[email protected]" <[email protected]> >> 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
