diff options
| author | Hangbin Liu | 2016-11-07 14:51:23 +0800 |
|---|---|---|
| committer | David S. Miller | 2016-11-09 20:22:55 -0500 |
| commit | 1af92836e53f66f8d2cddab2862cc7e1bb3a7cc3 (patch) | |
| tree | cf4de2b09745bae7ad53e3c244d4357af7cf9f4b /Documentation | |
| parent | 3f9b9770b479986cb6acebaf8372f15c0cbd7f85 (diff) | |
igmp: Document sysctl force_igmp_version
There is some difference between force_igmp_version and force_mld_version.
Add document to make users aware of this.
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 3db8c67d2c8d..5af48dd7c5fc 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -967,6 +967,21 @@ igmp_qrv - INTEGER Default: 2 (as specified by RFC2236 8.1) Minimum: 1 (as specified by RFC6636 4.5) +force_igmp_version - INTEGER + 0 - (default) No enforcement of a IGMP version, IGMPv1/v2 fallback + allowed. Will back to IGMPv3 mode again if all IGMPv1/v2 Querier + Present timer expires. + 1 - Enforce to use IGMP version 1. Will also reply IGMPv1 report if + receive IGMPv2/v3 query. + 2 - Enforce to use IGMP version 2. Will fallback to IGMPv1 if receive + IGMPv1 query message. Will reply report if receive IGMPv3 query. + 3 - Enforce to use IGMP version 3. The same react with default 0. + + Note: this is not the same with force_mld_version because IGMPv3 RFC3376 + Security Considerations does not have clear description that we could + ignore other version messages completely as MLDv2 RFC3810. So make + this value as default 0 is recommended. + conf/interface/* changes special settings per interface (where "interface" is the name of your network interface) |