Prop. 159 minor updates

i2p2www/spec/proposals/159-ssu2.rst

@@ -5,7 +5,7 @@ SSU2
     :author: eyedeekay, orignal, zlatinb, zzz
     :created: 2021-09-12
     :thread: http://zzz.i2p/topics/2612
-    :lastupdated: 2022-04-27
+    :lastupdated: 2022-04-30
     :status: Open
     :target: 0.9.56
 
@@ -7036,6 +7036,13 @@ Relay Request, Relay Intro, and Relay Response blocks are ack-eliciting.
 
 Hole punch may be retransmitted, as in SSU 1.
 
+All features of SSU 1 relay are supported, including those documented in
+[Prop158]_ and supported as of 0.9.50.
+IPv4 and IPv6 introductions are supported.
+A Relay Request may be sent over an IPv4 session for an IPv6 introduction,
+and a Relay Request may be sent over an IPv6 session for an IPv4 introduction.
+
+
 
 Published Router Info
 =====================
@@ -7043,7 +7050,8 @@ Published Router Info
 Address Properties
 -------------------
 
-The following address properties may be published, unchanged from SSU 1:
+The following address properties may be published, unchanged from SSU 1,
+including changes in [Prop159]_ supported as of API 0.9.50:
 
 - caps: [B,C,4,6] capabilities
 
@@ -7164,6 +7172,12 @@ In SSU2, Alice gets this information from Charlie's RI instead.
 - ikey[0-2]
 - itag[0-2]
 
+A router must not publish host or port in the address when publishing introducers.
+A router must publish 4 and/or 6 caps in the address when publishing introducers
+to indicate support for IPv4 and/or IPv6.
+This is the same as the current practice for recent SSU 1 addresses.
+
+
 
 Unpublished SSU2 Address
 -------------------------
@@ -7576,6 +7590,9 @@ References
 .. [Prop109]
     {{ proposal_url('109') }}
 
+.. [Prop158]
+    {{ proposal_url('158') }}
+
 .. [RFC-2104]
     https://tools.ietf.org/html/rfc2104