Jit of aliases working

dns/dns_proxy.go

@@ -745,6 +745,7 @@ func (p *DNSProxy) SetJITHandler(handler func(siteId int)) {
 // domain should be a domain name (e.g., "example.com" or "example.com.")
 // ip should be a valid IPv4 or IPv6 address
 func (p *DNSProxy) AddDNSRecord(domain string, ip net.IP, siteId int) error {
+	logger.Debug("Adding dns record for domain %s with IP %s (siteId=%d)", domain, ip.String(), siteId)
 	return p.recordStore.AddRecord(domain, ip, siteId)
 }
 

dns/dns_records.go

@@ -75,8 +75,18 @@ func (s *DNSRecordStore) AddRecord(domain string, ip net.IP, siteId int) error {
 	}
 	rs := m[domain]
 	if isV4 {
+		for _, existing := range rs.A {
+			if existing.Equal(ip) {
+				return nil
+			}
+		}
 		rs.A = append(rs.A, ip)
 	} else {
+		for _, existing := range rs.AAAA {
+			if existing.Equal(ip) {
+				return nil
+			}
+		}
 		rs.AAAA = append(rs.AAAA, ip)
 	}
 
@@ -87,6 +97,7 @@ func (s *DNSRecordStore) AddRecord(domain string, ip net.IP, siteId int) error {
 	return nil
 }
 
+
 // AddPTRRecord adds a PTR record mapping an IP address to a domain name
 // ip should be a valid IPv4 or IPv6 address
 // domain should be in FQDN format (e.g., "example.com.")