man: ip-link: Beef up VXLAN csum options a bit

Signed-off-by: Phil Sutter <phil@nwl.cc>

diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index c6a9c862dfda2f96f7c0ba043235b03ee625d37f..2cd93b0ff718e2d184614ea20ef3faae4f34ca84 100644 (file)
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -491,15 +491,15 @@ are entered into the VXLAN device forwarding database.
 
 .sp
 .I [no]udpcsum
-- specifies if UDP checksum is filled in
+- specifies if UDP checksum is calculated for transmitted packets over IPv4.
 
 .sp
 .I [no]udp6zerocsumtx
-- specifies if UDP checksum is filled in
+- skip UDP checksum calculation for transmitted packets over IPv6.
 
 .sp
 .I [no]udp6zerocsumrx
-- specifies if UDP checksum is received
+- allow incoming UDP packets over IPv6 with zero checksum field.
 
 .sp
 .BI ageing " SECONDS"