Unsupported protocols??

[Sean <snmjohnson@iclub.org>]

I was glancing at tail /var/log/messages, and noticed the following:

pppd[1007]: Unsupported protocol (0x7f) received
pppd[1007]: Unsupported protocol  (0x88fc) received
pppd[1007]: Unsupported protocol (0x67ec) received
pppd[1007]: Unsupported protocol (0x7432) received
pppd[1007]: Unsupported protocol (0x4822) received
pppd[1007]: Unsupported protocol (0xfe39) received
pppd[1007]: Unsupported protocol (0x8c73) received
pppd[1007]: Protocol-Reject for unsupported protocol 0x61
pppd[1007]: Unsupported protocol (0x848c) received
pppd[1007]: Unsupported protocol (0xbacd) received

etc, etc, etc

Does anybody know what this stuff means?

Sean