Re: wake-on-lan lost from rpi4 (works on rpi3)

From: Mike Karels <mike_at_karels.net>
Date: Tue, 25 Oct 2022 12:55:05 UTC 
On 25 Oct 2022, at 6:57, Ronald Klop wrote:

> Hi,
>
> When I do "wake ue0 `cat /home/ronald/freenas.ethernet `" on my RPI3B+ my NAS boots and tcpdump shows the following line on my rpi3 as well as on my router.
> 13:39:44.344111 IPX 00217046.6c:da:00:21:70:46.6cda > 00217046.6c:da:00:21:70:46.6cda: ipx-#6cda 65505
>
> When I do "wake genet0 `cat /home/ronald/freenas.ethernet `" on my RPI4 my NAS does not boot and tcpdump only show this on my rpi4 and *not* on my router.
> 13:37:26.448251 IPX 00217046.6c:da:00:21:70:46.6cda > 00217046.6c:da:00:21:70:46.6cda: ipx-#6cda 65505
>
> Firewall ipfw does not indicate that it blocks anything.
>
> RPI4 runs:
> FreeBSD rpi4 14.0-CURRENT FreeBSD 14.0-CURRENT #11 main-4f0c9b76cf: Sat Aug 13 23:59:19 CEST 2022     ronald@rpi4:/home/ronald/dev/obj/home/ronald/dev/freebsd/arm64.aarch64/sys/GENERIC-NODEBUG arm64
>
> genet0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>    options=68000b<RXCSUM,TXCSUM,VLAN_MTU,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>
>
> RPI3 runs:
> FreeBSD rpi3 13.1-RELEASE-p2 FreeBSD 13.1-RELEASE-p2 GENERIC arm64
>
> ue0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>    options=80009<RXCSUM,VLAN_MTU,LINKSTATE>
>
>
> Does genet0 not support these packages?
> What can prevent this packet to go on the ethernet while tcpdump still shows it is outgoing on the interface?
> genet0 does have a vlan configured connected to a bridge0 for some jails
> vlan3: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>    options=80000<LINKSTATE>
>    groups: vlan
>    vlan: 3 vlanproto: 802.1q vlanpcp: 0 parent interface: genet0
>
> ue0 is itself connected to a bridge0

Is the RPI3 also on a vlan and bridge?

Is the router (or switch) expecting the packet on the vlan?
If so, maybe you need to send on vlan3 rather than genet0.

The genet interface has some oddities about packet layouts;
that could be hitting here.  You could try disabling TCP TX
checksum offload: ifconfig genet0 -txcsum -txcsum6; that
simplifies some of the issues.

		Mike

> Regards,
> Ronald.