Le Mon, Apr 04, 2022 at 01:02:53PM +0200, Denis Fondras a écrit : > Le Mon, Apr 04, 2022 at 08:23:35PM +1000, David Gwynne a écrit : > > > > > > > On 3 Apr 2022, at 21:46, Denis Fondras <open...@ledeuns.net> wrote: > > > > > > Hi, > > > > > > In vxlan(4) manual, we have : > > > ---- > > > endpoint mode > > > When configured without a tunnel destination address, vxlan operates as > > > a bridge, but with learning disabled. > > > ---- > > > > > > The question is : is it possible to set tunnel source address without a > > > destination ? > > > > ifconfig vxlan0 tunneladdr 10.20.30.1 > > > > that should work. > > Thank you David. I will prepare a patch to the manual :)
Here is a tentative to document the tunneladdr option. Index: ifconfig.8 =================================================================== RCS file: /cvs/src/sbin/ifconfig/ifconfig.8,v retrieving revision 1.381 diff -u -p -r1.381 ifconfig.8 --- ifconfig.8 29 Dec 2021 21:41:28 -0000 1.381 +++ ifconfig.8 2 May 2022 09:46:10 -0000 @@ -1809,6 +1809,7 @@ for a complete list of the available pro .Op Oo Fl Oc Ns Cm tunneldf .Op Oo Fl Oc Ns Cm tunneldomain Ar rtable .Op Cm tunnelttl Ar ttl +.Op Cm tunneladdr Ar src_address .Op Cm txprio Ar prio .Op Oo Fl Oc Ns Cm vnetflowid .Op Oo Fl Oc Ns Cm vnetid Ar network-id @@ -1864,6 +1865,8 @@ Both addresses must be of the same famil The optional destination port can be specified for interfaces such as .Xr vxlan 4 , which further encapsulate the packets in UDP datagrams. +This directive is incompatible with +.Cm tunneladdr . .It Cm -tunnel Remove the source and destination tunnel addresses. .It Cm tunneldf @@ -1888,6 +1891,16 @@ the value can also be set to .Ar copy to have the TTL copied between the encapsulated protocol headers and the tunnel protocol headers. +.It Cm tunneladdr Ar src_address +Set the outer IP address of the tunnel. +This is useful for point-to-multipoint tunnels where peers are in different +subnets like +.Xr vxlan 4 +endpoint mode or +.Xr mgre 4 . +It is incompatible with the +.Cm tunnel +directive. .It Cm txprio Ar prio Configure the value used for the priority field in the tunnel protocol headers.
