From: Matt Joiner <anacrolix@gmail.com>
Date: Mon, 1 Dec 2014 09:27:11 +0000 (-0600)
Subject: Block IPv6 for now
X-Git-Tag: v1.0.0~1466
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=54ea32ddc43fd04eef6f45aa55d98c3d9c565dfc;p=btrtrc.git

Block IPv6 for now
---

diff --git a/client.go b/client.go
index 4a6837d3..5d82833d 100644
--- a/client.go
+++ b/client.go
@@ -431,10 +431,18 @@ func (me *Client) Stop() {
 	me.mu.Unlock()
 }
 
+var ipv6BlockRange = iplist.Range{Description: "non-IPv4 address"}
+
 func (cl *Client) ipBlockRange(ip net.IP) (r *iplist.Range) {
 	if cl.ipBlockList == nil {
 		return
 	}
+	ip = ip.To4()
+	if ip == nil {
+		log.Printf("saw non-IPv4 address")
+		r = &ipv6BlockRange
+		return
+	}
 	r = cl.ipBlockList.Lookup(ip)
 	return
 }