One-way communication with fwip(4) between FreeBSD and MacOS X?

[Arjan van Leeuwen]

Sorry for the second mail, forgot to reply to all and include freebsd-firewire@:

2005/10/28, Eric Anderson <anderson at centtech.com>:
> Arjan van Leeuwen wrote:
> > Hi,
> >
> > I'm trying to establish an fwip(4) connection between my Powerbook
> > running MacOS X 10.4 and my FreeBSD 6.0-RC1 host. I included fwip in
> > my kernel and assigned an IP address to the fwip0 interface.
> >
> > The weird thing is that it seems to work only one-way. I can ping my
> > Powerbook from the FreeBSD machine, I can even ssh to it, etc. But
> > from the Powerbook to the FreeBSD host, I get no replies to my pings,
> > and I can't access ssh.
> >
> > If I do a tcpdump on the FreeBSD machine on fwip0, I can see that the
> > ping requests arrive, but there's no answer:
> >
> > winston% sudo tcpdump -i fwip0
> > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> > listening on fwip0, link-type APPLE_IP_OVER_IEEE1394 (Apple
> > IP-over-IEEE 1394), capture size 96 bytes
> > 20:54:32.853931 IP 10.0.0.2 > 10.0.0.1: ICMP echo request, id 20738,
> > seq 0, length 64
> > 20:54:33.854038 IP 10.0.0.2 > 10.0.0.1: ICMP echo request, id 20738,
> > seq 1, length 64
> > 20:54:34.854122 IP 10.0.0.2 > 10.0.0.1: ICMP echo request, id 20738,
> > seq 2, length 64
> >
> > It almost looks like there's a firewall setup to stop any incoming
> > traffic on the fwip interface (I have no firewall installed).
> >
> > How do I proceed in debugging this?
> >
> > Thanks,
> >
> > Arjan
> >
> > P.S. I'm not subscribed to the firewire@ list, please CC me on reply.
>
> If you run a tcpdump on fxp0 while doing the pings, do you see the
> packets leaving on that interface?

No.

>
> You might send the output of netstat -rn also

winston% netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            192.168.0.1        UGS         0      952   fxp0
10/24              link#1             UC          0        0  fwip0
10.0.0.1           ff.ff.ff.ff.ff.ff.ff.ff.a.2.ff.fe.0.0.0.0 UHLW     
  1        2    lo0
10.0.0.2           0.11.24.ff.fe.36.85.28.b.2.0.1.0.0.0.0 UHLW       
1       84  fwip0   1162
127.0.0.1          127.0.0.1          UH          0       36    lo0
192.168.0          link#2             UC          0        0   fxp0
192.168.0.1        00:40:f4:67:3e:64  UHLW        2       39   fxp0   1097


Thanks for your help,

Arjan

>
> Eric
>
>
>
>
> --
> ------------------------------------------------------------------------
> Eric Anderson        Sr. Systems Administrator        Centaur Technology
> Anything that works is better than anything that doesn't.
> ------------------------------------------------------------------------
>