Index: uspace/srv/net/inetsrv/inet_link.c
===================================================================
--- uspace/srv/net/inetsrv/inet_link.c	(revision 313824a3373e4159b53978621bf1d3ece6a5e02f)
+++ uspace/srv/net/inetsrv/inet_link.c	(revision 1f97352e85e078869980962995e23044a6312e14)
@@ -338,5 +338,19 @@
 }
 
-/** Send IPv4 datagram over Internet link */
+/** Send IPv4 datagram over Internet link
+ *
+ * @param ilink Internet link
+ * @param lsrc  Source IPv4 address
+ * @param ldest Destination IPv4 address
+ * @param dgram IPv4 datagram body
+ * @param proto Protocol
+ * @param ttl   Time-to-live
+ * @param df    Do-not-Fragment flag
+ *
+ * @return EOK on success
+ * @return ENOMEM when not enough memory to create the datagram
+ * @return ENOTSUP if networking mode is not supported
+ *
+ */
 int inet_link_send_dgram(inet_link_t *ilink, addr32_t lsrc, addr32_t ldest,
     inet_dgram_t *dgram, uint8_t proto, uint8_t ttl, int df)
@@ -401,5 +415,17 @@
 }
 
-/** Send IPv6 datagram over Internet link */
+/** Send IPv6 datagram over Internet link
+ *
+ * @param ilink Internet link
+ * @param ldest Destination MAC address
+ * @param dgram IPv6 datagram body
+ * @param proto Next header
+ * @param ttl   Hop limit
+ * @param df    Do-not-Fragment flag (unused)
+ *
+ * @return EOK on success
+ * @return ENOMEM when not enough memory to create the datagram
+ *
+ */
 int inet_link_send_dgram6(inet_link_t *ilink, addr48_t ldest,
     inet_dgram_t *dgram, uint8_t proto, uint8_t ttl, int df)