Xref: utzoo comp.bugs.4bsd:912 comp.unix.wizards:10606 comp.protocols.tcp-ip:4385 Path: utzoo!utgpu!water!watmath!clyde!att!ucbvax!husc6!cs.utexas.edu!fletcher From: fletcher@cs.utexas.edu (Fletcher Mattox) Newsgroups: comp.bugs.4bsd,comp.unix.wizards,comp.protocols.tcp-ip Subject: Interlan drops a byte? Message-ID: <3210@cs.utexas.edu> Date: 21 Aug 88 01:17:16 GMT Organization: U. Texas CS Dept., Austin, Texas Lines: 24 Has anybody else seen a 4.3BSD VAX with an Interlan Ethernet interface drop a byte of data? Well, that's what we're seeing. For example, if you % rsh remotehost cat 183_byte_file and the remotehost is a 4.3/Interlan host, the rsh will fail. If you look at a packet on the wire, say, with etherfind or tcpdump, the IP header claims there are 223 bytes (183+40 TCP/IP headers), which is correct. Yet there are really only 222 bytes of data in the packet. Hmm. Futhermore other file sizes fail. It appears that if (n%256 == 183) where n is the number of bytes in the above rsh, then TCP/IP fails because a byte is dropped from the data. If we replace the Interlan with a DEUNA, all is as it should be. Any ideas? -- Fletcher Mattox fletcher@cs.utexas.edu cs.utexas.edu!fletcher