Commit bc73223c authored by Tomáš Peterka's avatar Tomáš Peterka Committed by Rafael Monnerat

Check whether interface is a bridge before bridging

When creating a TAP interface we try to add it to a bridge no mater what kind of the external interface is. Check whether it is a bridge first.

/reviewed-on !12
parent 40fb5992
......@@ -863,7 +863,7 @@ class Interface(object):
# Attach to TAP network interface, only if the interface interface does not
# report carrier
_, result = callAndRead(['ip', 'addr', 'list',])
_, result = callAndRead(['ip', 'addr', 'list',], raise_on_error=False)
self.attach_to_tap = 'DOWN' in result.split('\n', 1)[0]
# XXX no __getinitargs__, as instances of this class are never deserialized.
......@@ -912,6 +912,10 @@ class Interface(object):
# local addresses or anything which does not exists in RFC!
return address_list
def isBridge(self):
_, result = callAndRead(['brctl', 'show'])
return any(line.startswith( for line in result.split("\n"))
def getInterfaceList(self):
"""Returns list of interfaces already present on bridge"""
interface_list = []
......@@ -939,7 +943,12 @@ class Interface(object):
tap: Tap, the tap interface.
if not in self.getInterfaceList():
callAndRead(['brctl', 'addif',,])
if self.isBridge():
callAndRead(['brctl', 'addif',,])
self.logger.warning("Interface slapos.cfg:interface_name={} is not a bridge."
"TUN/TAP interface {} might not have internet connection."
def _addSystemAddress(self, address, netmask, ipv6=True):
"""Adds system address to interface
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