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-rw-r--r--src/net.cpp9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/net.cpp b/src/net.cpp
index de8f8184a2..99f5604ff2 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1462,12 +1462,19 @@ static std::string GetDNSHost(const CDNSSeedData& data, ServiceFlags* requiredSe
void CConnman::ThreadDNSAddressSeed()
{
// goal: only query DNS seeds if address need is acute
+ // Avoiding DNS seeds when we don't need them improves user privacy by
+ // creating fewer identifying DNS requests, reduces trust by giving seeds
+ // less influence on the network topology, and reduces traffic to the seeds.
if ((addrman.size() > 0) &&
(!GetBoolArg("-forcednsseed", DEFAULT_FORCEDNSSEED))) {
MilliSleep(11 * 1000);
LOCK(cs_vNodes);
- if (vNodes.size() >= 2) {
+ int nRelevant = 0;
+ for (auto pnode : vNodes) {
+ nRelevant += pnode->fSuccessfullyConnected && ((pnode->nServices & nRelevantServices) == nRelevantServices);
+ }
+ if (nRelevant >= 2) {
LogPrintf("P2P peers available. Skipped DNS seeding.\n");
return;
}