diff --git a/plugins/domains/core-post-deploy b/plugins/domains/core-post-deploy
new file mode 100755
index 000000000..60b71ef6f
--- /dev/null
+++ b/plugins/domains/core-post-deploy
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+source "$PLUGIN_AVAILABLE_PATH/domains/functions"
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
+
+trigger-domains-core-post-deploy() {
+  declare desc="domains core-post-deploy plugin trigger"
+  declare trigger="core-post-deploy"
+  declare APP="$1"
+
+  if [[ "$(plugn trigger proxy-type "$APP")" != "nginx" ]]; then
+    return
+  fi
+
+  if [[ ! -f "/etc/nginx/sites-enabled/default" ]]; then
+    return
+  fi
+
+  get_app_domains | while read -r domain; do
+    if [[ "$domain" =~ $RE_IPV4 ]]; then
+      dokku_log_warn "Detected IPv4 domain name with nginx proxy enabled."
+      dokku_log_warn "Ensure the default nginx site is removed before continuing."
+      break
+    fi
+
+    if [[ "$domain" =~ $RE_IPV6 ]]; then
+      dokku_log_warn "Detected IPv6 domain name with nginx proxy enabled."
+      dokku_log_warn "Ensure the default nginx site is removed before continuing."
+      break
+    fi
+  done
+}
+
+trigger-domains-core-post-deploy "$@"
diff --git a/plugins/domains/functions b/plugins/domains/functions
index 79341b6a3..e7fe0bd2d 100755
--- a/plugins/domains/functions
+++ b/plugins/domains/functions
@@ -26,8 +26,6 @@ domains_setup() {
   local APP="$1"
   local APP_VHOST_PATH="$DOKKU_ROOT/$APP/VHOST"
   local GLOBAL_VHOST_PATH="$DOKKU_ROOT/VHOST"
-  local RE_IPV4="$(get_ipv4_regex)"
-  local RE_IPV6="$(get_ipv6_regex)"
   local DEFAULT_VHOSTS="$(get_default_vhosts "$APP")"
 
   if [[ ! -f $APP_VHOST_PATH ]]; then
@@ -264,8 +262,6 @@ is_global_vhost_enabled() {
   declare desc="returns true if we have a valid global vhost set; otherwise returns false"
   local GLOBAL_VHOSTS=$(get_global_vhosts)
   local GLOBAL_VHOSTS_ENABLED=false
-  local RE_IPV4="$(get_ipv4_regex)"
-  local RE_IPV6="$(get_ipv6_regex)"
 
   while read -r GLOBAL_VHOST; do
     if (is_valid_hostname "$GLOBAL_VHOST"); then
diff --git a/tests/unit/domains.bats b/tests/unit/domains.bats
index f37f88ff4..1fb49b522 100644
--- a/tests/unit/domains.bats
+++ b/tests/unit/domains.bats
@@ -355,3 +355,21 @@ teardown() {
   echo "status: $status"
   assert_success
 }
+
+@test "(domains) verify warning on ipv4/ipv6 domain name" {
+  touch /etc/nginx/sites-enabled/default
+  rm "$DOKKU_ROOT/VHOST"
+  echo "127.0.0.1" >"$DOKKU_ROOT/VHOST"
+  run deploy_app
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains "Detected IPv4 domain name with nginx proxy enabled."
+
+  rm -f /etc/nginx/sites-enabled/default
+  run /bin/bash -c "dokku ps:rebuild $TEST_APP"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains "Detected IPv4 domain name with nginx proxy enabled." 0
+}