diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/vrf.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/networking/vrf.txt b/Documentation/networking/vrf.txt index 8ff7b4c8f91b..d4b129402d57 100644 --- a/Documentation/networking/vrf.txt +++ b/Documentation/networking/vrf.txt @@ -103,6 +103,11 @@ VRF device: or to specify the output device using cmsg and IP_PKTINFO. +By default the scope of the port bindings for unbound sockets is +limited to the default VRF. That is, it will not be matched by packets +arriving on interfaces enslaved to an l3mdev and processes may bind to +the same port if they bind to an l3mdev. + TCP & UDP services running in the default VRF context (ie., not bound to any VRF device) can work across all VRF domains by enabling the tcp_l3mdev_accept and udp_l3mdev_accept sysctl options: @@ -112,10 +117,6 @@ tcp_l3mdev_accept and udp_l3mdev_accept sysctl options: netfilter rules on the VRF device can be used to limit access to services running in the default VRF context as well. -The default VRF does not have limited scope with respect to port bindings. -That is, if a process does a wildcard bind to a port in the default VRF it -owns the port across all VRF domains within the network namespace. - ################################################################################ Using iproute2 for VRFs |