iptunnel: document mode parameter for sit tunnels

Original-Author: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>

diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index 5d73538b7ec3cd0d9bc543fa3bf5c285bdbfd118..3cc2f5dcdac314ea50e690b21ce074b3c5f20722 100644 (file)
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -660,7 +660,9 @@ the following additional arguments are supported:
 ] [
 .RB [ no ] encap-csum
 ] [
-.RB [ no ] encap-remcsum
+.I " [no]encap-remcsum "
+] [
+.I " mode " { ip6ip | ipip | any } "
 ]
 
 .in +8
@@ -697,6 +699,12 @@ encapsulation.
 - specifies if Remote Checksum Offload is enabled. This is only
 applicable for Generic UDP Encapsulation.
 
+.sp
+.BI mode " { ip6ip | ipip | any } "
+- specifies mode in which device should run. "ip6ip" indicates
+IPv6-Over-IPv4, "ipip" indicates "IPv4-Over-IPv4", "any" indicates either
+IPv6 or IPv4 Over IPv4. Only supported for SIT where the default is "ip6ip".
+
 .in -8
 
 .TP