diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -77,3 +77,5 @@ Use the [kazupon Git commit message convention](https://github.com/kazupon/git-c
 
 ## This Git repo
 This repo's upstream is https://six-five-six-four.com/git/reactor/lookaround.
+
+I don't use GitHub issues, so issues are in issues.md in the repo.
diff --git a/issues.md b/issues.md
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@@ -0,0 +1,23 @@
+**Issues**
+
+Just doing ULIDs cause `rusty_ulid` makes it easy.
+
+# 01FP9843V1J3H9JMHXFPJSV2QJ
+
+Have to disable VirtualBox virtual interface thingy to make it work.
+
+Might also misbehave on systems with both Ethernet and WiFi connections.
+
+I think this is because the `UdpSocket`, when I tell it to bind to
+`0.0.0.0`, doesn't actually bind to all interfaces, it picks an interface
+and binds to it.
+
+I don't have any systems at home to replicate this on. And if I have
+to poll multiple sockets, I'll probably just drag in Tokio even
+though I was hoping not to use it - It's nicer than threading.
+
+I don't think Tokio has a way to iterate over network interfaces
+and get their IPs, so I might have to find another dependency
+for that. I think on Linux I can get it from `/sys/class/net` but
+I can't remember the trick for that. I think last time I did this
+(for that work project) I just punted to Qt.