From 0372e14d79a7adf0c654340859fe96d3e8cac8a2 Mon Sep 17 00:00:00 2001
From: Andrew Dunham <andrew@du.nham.ca>
Date: Tue, 20 Dec 2022 11:42:51 -0500
Subject: [PATCH] net/dns: bump DNS-over-TCP size limit to 4k

We saw a few cases where we hit this limit; bumping to 4k seems
relatively uncontroversial.

Change-Id: I218fee3bc0d2fa5fde16eddc36497a73ebd7cbda
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
---
 net/dns/manager.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/dns/manager.go b/net/dns/manager.go
index 7d7d29689..00fb7029e 100644
--- a/net/dns/manager.go
+++ b/net/dns/manager.go
@@ -427,8 +427,8 @@ const (
 	// The RFCs don't specify the max size of a TCP-based DNS query,
 	// but we want to keep this reasonable. Given payloads are typically
 	// much larger and all known client send a single query, I've arbitrarily
-	// chosen 2k.
-	maxReqSizeTCP = 2048
+	// chosen 4k.
+	maxReqSizeTCP = 4096
 )
 
 // dnsTCPSession services DNS requests sent over TCP.