Date: Tue, 12 Dec 2006 00:14:21 -0700 From: Martin Alejandro Paredes Sanchez <mapsware@prodigy.net.mx> To: freebsd-questions@freebsd.org Cc: a@zeos.net Subject: Re: How does my computer work with an empty arp table? Message-ID: <200612120014.22107.mapsware@prodigy.net.mx> In-Reply-To: <20061204154222.GA636@host.my.domain> References: <20061203174849.GA4561@host.my.domain> <20061204154222.GA636@host.my.domain>
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El Lun 04 Dic 2006 08:42, a@zeos.net escribi=C3=B3: > On Mon, Dec 04, 2006 at 10:26:46AM -0500, Lowell Gilbert wrote: > > a@zeos.net writes: > > > My computer is connected to ISP via ADSL and works properly. > > > > > > I typed > > > > > > arp -a > > > > > > and saw an empty table, although I pinged successfully an Internet ho= st > > > one second ago. > > > > > > How does it work? > > > $ ifconfig > > > rl0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > > > =C2=A0=C2=A0=C2=A0=C2=A0options=3D8<VLAN_MTU> > > > =C2=A0=C2=A0=C2=A0=C2=A0inet6 fe80::202:44ff:fe92:1875%rl0 prefixlen = 64 scopeid 0x1=20 > > > =C2=A0=C2=A0=C2=A0=C2=A0inet 192.168.1.2 netmask 0xffffff00 broadcast= 192.168.1.255 > > > > Maybe you are connected to your service provider by PPP-over-Ethernet? > > In that case, the PPP link (which doesn't need ARP) is your next-hop > > to the Internet, rather than the modem on the Ethernet link. > > Yes, you are right, I forgot about PPP. Many thanks. Also, the ARP table only contain info of your subnet maps
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