Index: asterisk-1.6.2.18/channels/chan_iax2.c
===================================================================
--- asterisk-1.6.2.18.orig/channels/chan_iax2.c	2011-03-08 16:38:00.000000000 +0000
+++ asterisk-1.6.2.18/channels/chan_iax2.c	2011-03-17 11:19:54.000000000 +0000
@@ -7436,6 +7436,7 @@
 		} else
 			ast_string_field_set(iaxs[callno], secret, user->secret);
 		res = 0;
+		ast_string_field_set(iaxs[callno], host, user->name);
 		user = user_unref(user);
 	} else {
 		 /* user was not found, but we should still fake an AUTHREQ.
@@ -7568,7 +7569,6 @@
 			ast_atomic_fetchadd_int(&user->curauthreq, -1);
 			ast_clear_flag(p, IAX_MAXAUTHREQ);
 		}
-		ast_string_field_set(p, host, user->name);
 		user = user_unref(user);
 	}
 	if (ast_test_flag(p, IAX_FORCE_ENCRYPT) && !p->encmethods) {