I don't think so, I have default ext-net that I use for other instances.
openstack network list
+--------------------------------------+---------+--------------------------------------------------------------------------------------------------------------------------------------------------------+ | ID | Name | Subnets | +--------------------------------------+---------+--------------------------------------------------------------------------------------------------------------------------------------------------------+ | 3f4e3b19-4a46-4672-aade-5654d1fc0704 | Ext-Net | 1b0dae3a-4146-4b81-b38a-17d4e5b30f2c, bdc559c9-8f89-4e56-a895-133f60b0262f, d6f02615-65e9-4921-8943-8aa72a744a16, e9e8eec1-5c91-40ec-b471-11a96a151b76 | +--------------------------------------+---------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
I don't think so, I have default ext-net that I use for other instances.
openstack network list
+------ ------- ------- ------- ------- ----+-- ------- +------ ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------+ ------- ------- ------- ------- ----+-- ------- +------ ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------+ 4a46-4672- aade-5654d1fc07 04 | Ext-Net | 1b0dae3a- 4146-4b81- b38a-17d4e5b30f 2c, bdc559c9- 8f89-4e56- a895-133f60b026 2f, d6f02615- 65e9-4921- 8943-8aa72a744a 16, e9e8eec1- 5c91-40ec- b471-11a96a151b 76 | ------- ------- ------- ------- ----+-- ------- +------ ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------+
| ID | Name | Subnets |
+------
| 3f4e3b19-
+------