Re: ipv4 route with ipv6 local link nexthop ?

> On Mar 13, 2024, at 4:36 AM, Benoit Chesneau <benoitc@enki-multimedia.eu> wrote:
> 
> On latest freebsd 14.0 release , I am trying to join an ipv4 address over an IPV6 local link using the following command :
> 
> `route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200`
> 
> But I  get the following error:
> 
> ```
> route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200
> add net 10.200.1.1: gateway fe80::9439:36ff:fef0:7cbd%vlan200 fib 0: Invalid argument

I guess that is regression by transition of route(8) to NETLINK.

Can you please build sbin/route from source without NETLINK and give it another try ?

```
# cd /usr/src/sbin/route
# setenv MK_NETLINK_SUPPORT no
# make
```

> ```
> 
> ping6 to `fe80::9439:36ff:fef0:7cbd%vlan200` works. What I am doing wrong? Configuration of the interface is the following:
> 
> ```
> vlan200: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
>         options=4600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG>
>         ether fe:d9:dd:2d:35:c5
>         inet6 fe80::fcd9:ddff:fe2d:35c5%vlan200 prefixlen 64 scopeid 0x5
>         groups: vlan
>         vlan: 200 vlanproto: 802.1q vlanpcp: 0 parent interface: iavf0
>         media: Ethernet autoselect (10Gbase-SR <full-duplex>)
>         status: active
>         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL
> ```
> 
> 
> 
> Benoît 

Best regards,
Zhenlei