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- Date: 09 Apr 2001 20:57:44 +0400
- From: osv at javad.ru (Sergei Organov)
- Subject: TCP question.
Eric Norum <eric.norum at usask.ca> writes:
> Sergei Organov wrote:
> > Using latest RTEMS snapshot I've noticed that when my board running RTEMS
> > boots, it sends arp request of the form ('tcpdump' output, 'rcv' is board
> > name):
> > 20:03:42.041796 8:f3:3e:c2:7e:38 Broadcast arp 60: arp who-has rcv tell rcv
> > As far as I understand, it asks outside world for its own Ethernet address
> > (and probably is waiting for reply then?). This seems strange as Ethernet
> > address is specified in the rtems_bsdnet_ifconfig structure. Is it a bug or
> > feature?
> If your RTEMS machine has changed its Ethernet or Internet address the
> initial broadcast lets all other hosts on the segment flush any old,
> incorrect, information from their ARP tables.
Thanks, this sounds reasonable.
> This is mentioned in an RFC somewhere, but I don't have the exact reference
> Eric Norum eric.norum at usask.ca
> Department of Electrical Engineering Phone: (306) 966-5394
> University of Saskatchewan FAX: (306) 966-5407
> Saskatoon, Canada.