diff --git a/django/core/management/commands/runserver.py b/django/core/management/commands/runserver.py
index b757783..e75fd18 100644
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a
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b
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class Command(BaseCommand):
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| 82 | 82 | raise CommandError('"%s" is not a valid port number ' |
| 83 | 83 | 'or address:port pair.' % options['addrport']) |
| 84 | 84 | self.addr, _ipv4, _ipv6, _fqdn, self.port = m.groups() |
| 85 | | if not self.port.isdigit(): |
| | 85 | if not self.port.isdigit() or not 0 <= int(self.port) <= 65535: |
| 86 | 86 | raise CommandError("%r is not a valid port number." % self.port) |
| 87 | 87 | if self.addr: |
| 88 | 88 | if _ipv6: |