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networkd: Assign VXLAN destination port to when GPE is set

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When VXLAN destination port is unset and GPE is set
then assign 4790 to destination port. Kernel does the same as
well as iproute.

IANA VXLAN-GPE port is 4790
This commit is contained in:
Susant Sahani
2019-05-08 20:09:42 +05:30
committed by Yu Watanabe
parent 4eb086a387
commit 1c8b0eccc7
2 changed files with 5 additions and 1 deletions
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3
man/systemd.netdev.xml
View File

@@ -661,7 +661,8 @@
<para>Takes a boolean. When true, Generic Protocol Extension extends the existing VXLAN protocol
to provide protocol typing, OAM, and versioning capabilities. For details about the VXLAN GPE
Header, see the <ulink url="https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-07">
Generic Protocol Extension for VXLAN </ulink> document. Defaults to false.</para>
Generic Protocol Extension for VXLAN </ulink> document. If destination port is not specified and
Generic Protocol Extension is set then default port of 4790 is used. Defaults to false.</para>
</listitem>
</varlistentry>
<varlistentry>

3
src/network/netdev/vxlan.c
View File

@@ -289,6 +289,9 @@ static int netdev_vxlan_verify(NetDev *netdev, const char *filename) {
"%s: VXLAN TTL must be <= 255. Ignoring.",
filename);
if (!v->dest_port && v->generic_protocol_extension)
v->dest_port = 4790;
return 0;
}