Re: UDP network problem

Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 19 Aug 1997 22:49:46 +0100 (BST)

> signaling. Data would go in-band. UDP (Unix Datagram Protocol) are
> (were) datagrams with an IP Header. If the IP "layer" now allows one
> to fragment, i.e., use datagrams that no longer consist of a single
> packet, then the whole reason for using datagrams has disappeared.

IP has allowed it since before IPv4 was specified, in the days of NCP. And
your argument is complete [deleted by your netnanny ;)]. In the IP network
UDP is a datagram, the fact that deep magic occurs below that is an issue
for lower layers, in the same way as an IP datagram over ATM is still a
datagram and any packet sent over a modem is sent as a stream of small
blocks in the tone patterns.