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| author | bms <bms@FreeBSD.org> | 2007-03-29 21:39:22 +0000 |
|---|---|---|
| committer | bms <bms@FreeBSD.org> | 2007-03-29 21:39:22 +0000 |
| commit | 44f999134ffe53f466ccaa6b33fe11dc67c47746 (patch) | |
| tree | 63a19ea2f8222ea1bd48a2dc80eb99332f4f56f6 /etc/network.subr | |
| parent | 16df05c48d392cb31d976cc1797106b97760116d (diff) | |
| download | FreeBSD-src-44f999134ffe53f466ccaa6b33fe11dc67c47746.zip FreeBSD-src-44f999134ffe53f466ccaa6b33fe11dc67c47746.tar.gz | |
Fix a bug in IPv4 address configuration exposed by refcounting.
* Join the IPv4 all-hosts multicast group 224.0.0.1 once only;
that is, when an IPv4 address is first configured on an interface.
* Do not join it for subsequent IPv4 addresses as this violates IGMP.
* Be sure to leave the group when all IPv4 addresses have been removed
from the interface.
* Add two DIAGNOSTIC printfs related to the issue.
Further care and attention is needed in this area; it is suggested that
netinet's attachment to the ifnet structure be compartmentalized and
non-implicit.
Bug found by: andre
MFC after: 1 month
Diffstat (limited to 'etc/network.subr')
0 files changed, 0 insertions, 0 deletions
