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@@ -105,6 +105,15 @@ MTU = {
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# + 8 UDP Header
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# + 20 IPv4 Header
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'vxlan_underlay_iface' : 1610,
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+
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+ # VXLAN underlay device, probably a VLAN within $POP or between two BBRs.
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+ #
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+ # 1560
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+ # + 14 Inner Ethernet Frame
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+ # + 8 VXLAN Header
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+ # + 8 UDP Header
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+ # + 40 IPv6 Header
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+ 'vxlan_underlay_iface_ipv6' : 1630,
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}
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@@ -712,7 +721,11 @@ def _generate_vxlan_interface_config (node_config, ifaces, sites_config):
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# Set the MTU of this (probably) VLAN device to the MTU required for a VXLAN underlay
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# device, where B.A.T.M.A.N. adv. is to be expected within the VXLAN overlay.
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- _set_mtu_to_iface_and_upper (ifaces, iface, MTU['vxlan_underlay_iface'])
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+ underlay_mtu = MTU['vxlan_underlay_iface']
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+ if iface.startswith('vlan14'):
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+ underlay_mtu = MTU['vxlan_underlay_iface_ipv6']
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+
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+ _set_mtu_to_iface_and_upper (ifaces, iface, underlay_mtu)
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# If the string 'all' is part of the list, blindly use all sites configured for this node
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if 'all' in batman_connect_sites:
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