diff --git a/src/chainparams.h b/src/chainparams.h
--- a/src/chainparams.h
+++ b/src/chainparams.h
@@ -85,7 +85,7 @@
     /** Return the BIP70 network string (main, test or regtest) */
     std::string NetworkIDString() const { return strNetworkID; }
     /** Return the list of hostnames to look up for DNS seeds */
-    const std::vector<std::string> &DNSSeeds() const { return vSeeds; }
+    const std::vector<std::string> DNSSeeds() const;
     const std::vector<uint8_t> &Base58Prefix(Base58Type type) const {
         return base58Prefixes[type];
     }
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -70,6 +70,13 @@
                               nBits, nVersion, genesisReward);
 }
 
+const std::vector<std::string> CChainParams::DNSSeeds() const {
+    if (gArgs.IsArgSet("-overridednsseed")) {
+        return {gArgs.GetArg("-overridednsseed", "")};
+    }
+    return vSeeds;
+}
+
 /**
  * Main network
  */
diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -662,6 +662,10 @@
             "Always query for peer addresses via DNS lookup (default: %d)",
             DEFAULT_FORCEDNSSEED),
         ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
+    argsman.AddArg("-overridednsseed",
+                   "If set, only use the specified DNS seed when "
+                   "querying for peer addresses via DNS lookup.",
+                   ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
     argsman.AddArg(
         "-listen",
         "Accept connections from outside (default: 1 if no -proxy or -connect)",
diff --git a/src/seeder/main.cpp b/src/seeder/main.cpp
--- a/src/seeder/main.cpp
+++ b/src/seeder/main.cpp
@@ -148,6 +148,10 @@
                        ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
         argsman.AddArg("-onion=<ip:port>", "Tor proxy IP/Port",
                        ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
+        argsman.AddArg("-overridednsseed",
+                       "If set, only use the specified DNS seed when "
+                       "querying for peer addresses via DNS lookup.",
+                       ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
         argsman.AddArg("-proxyipv4=<ip:port>", "IPV4 SOCKS5 proxy IP/Port",
                        ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
         argsman.AddArg("-proxyipv6=<ip:port>", "IPV6 SOCKS5 proxy IP/Port",
diff --git a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@@ -193,6 +193,7 @@
 		script_standard_tests.cpp
 		script_tests.cpp
 		scriptnum_tests.cpp
+		seeds_tests.cpp
 		serialize_tests.cpp
 		settings_tests.cpp
 		sigcache_tests.cpp
diff --git a/src/test/seeds_tests.cpp b/src/test/seeds_tests.cpp
new file mode 100644
--- /dev/null
+++ b/src/test/seeds_tests.cpp
@@ -0,0 +1,23 @@
+// Copyright (c) 2020 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <chainparams.h>
+
+#include <test/util/setup_common.h>
+
+#include <boost/test/unit_test.hpp>
+
+BOOST_FIXTURE_TEST_SUITE(seeds_tests, TestingSetup)
+
+BOOST_AUTO_TEST_CASE(override_dns_seed) {
+    // No override should always provide some DNS seeds
+    const auto params = CreateChainParams(CBaseChainParams::MAIN);
+    BOOST_CHECK(params->DNSSeeds().size() > 0);
+
+    // Overriding should only return that DNS seed
+    gArgs.ForceSetArg("-overridednsseed", "localhost");
+    BOOST_CHECK(params->DNSSeeds() == std::vector<std::string>{{"localhost"}});
+}
+
+BOOST_AUTO_TEST_SUITE_END()