update Sliver admin
diff --git a/plstackapi/core/models/subnet.py b/plstackapi/core/models/subnet.py
index ae25b63..93a7ba5 100644
--- a/plstackapi/core/models/subnet.py
+++ b/plstackapi/core/models/subnet.py
@@ -8,7 +8,7 @@
# Create your models here.
class Subnet(PlCoreBase):
- subnet_id = models.CharField(max_length=256, unique=True, blank=True)
+ subnet_id = models.CharField(max_length=256, unique=True)
cidr = models.CharField(max_length=20)
ip_version = models.IntegerField()
start = models.IPAddressField()