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Re: RE : [lwip-users] Device name

From: Juri Haberland
Subject: Re: RE : [lwip-users] Device name
Date: Thu, 18 Oct 2007 10:25:26 +0200
User-agent: Thunderbird (X11/20070728)

Nicolas Pinault wrote:

And I suppose you don't want to define "lwip_device" in your HOSTS file ?
Of course not.
Note that an lwIP device using DHCP (with LWIP_NETIF_HOSTNAME=1) could register its name in a DNS (with DHCP/DNS Windows Server, but I suppose for the same exist on Linux), so, client using this DNS could do such ping.
I already use DHCP with a device name. I can see the device name in DHCP server table (WIN NT 4.0 server). But I can't ping on this name.
In some situations, I don't have a DHCP server.

To ping a device via a name ('ping my-device' instead of 'ping') you need a name-to-IP-address service. This is usually done with DNS, or in simpler cases, with just an entry in a hosts file on every machine that should be able to resolve the name to an IP address. As S. Ali Tokmen wrote, NetBIOS name service can do similar things, but I would not use such an out-dated mechanism, which is OS specific, too. That's what DNS was invented for.

If you want to update/alter DNS entries dynamically, you should use dynamic DNS updates. See RFC 2136.


PS: '_' is not a valid character in terms of DNS host names...

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