tree 9d4f12f6b051f195e15c9b86acb3591e7322440f
parent 319baacb125d78ff2acdcbfc5693dc4425d38b6e
author shemminger <shemminger> 1142985470 +0000
committer shemminger <shemminger> 1142985470 +0000

The ip(8) command has a bug when dealing with IPoIB link layer
addresses. Specifically it does not correctly handle the addition of
new entries in the neighbor/arp table. For example, this command will
fail:

ip neigh add 192.168.0.138 lladdr
00:00:04:04:fe:80:00:00:00:00:00:00:00:01:73:00:00:00:8a:91 nud
permanent dev ib0

An IPoIB link layer address is 20-bytes (see
http://www.ietf.org/internet-drafts/draft-ietf-ipoib-ip-over-infiniband-09.txt,
section 9.1.1).

The command line parsing code expects link layer addresses to be a
maximum of 16-bytes. Addresses over 16-bytes are truncated.