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Ensuring ipv4 config ahead of ipv6 in /etc/network/interfaces file for mgmt interface #1544

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Ensuring ipv4 config ahead of ipv6 in /etc/network/interfaces file for mgmt interface #1544

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32c2c9d
In generating the interfaces file, put ipv4 config ahead of ipv6 for the
wendani Mar 29, 2018
0b44ae9
Merge remote-tracking branch 'public/master' into intrfaces
wendani Mar 29, 2018
528ebbc
For each interface, sift up its ipv4 config profile to the top
wendani Apr 2, 2018
f934a97
Merge branch 'publicmaster' into intrfaces
wendani Apr 2, 2018
a027d7c
Improve codes
wendani Apr 2, 2018
4b8126d
Sort with interface name as the primary key and sift up ipv4 address
wendani Apr 2, 2018
fb52836
Change function name and add comment as requested
wendani Apr 2, 2018
45dad1a
Merge remote-tracking branch 'public/master' into intrfaces
wendani Apr 2, 2018
bb898ae
Update unit test on interfaces.j2 template:
wendani Apr 3, 2018
e78a8d2
Merge remote-tracking branch 'public/master' into intrfaces
wendani Apr 10, 2018
569f703
Merge remote-tracking branch 'public/master' into intrfaces
wendani Apr 14, 2018
eec9686
Merge remote-tracking branch 'public/master' into intrfaces
wendani Apr 19, 2018
3e177aa
Merge remote-tracking branch 'public/master' into intrfaces
wendani Apr 20, 2018
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2 changes: 1 addition & 1 deletion files/image_config/interfaces/interfaces.j2
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Expand Up @@ -21,7 +21,7 @@ iface lo {{ 'inet' if prefix | ipv4 else 'inet6' }} static
# The management network interface
auto eth0
{% if MGMT_INTERFACE %}
{% for (name, prefix) in MGMT_INTERFACE %}
{% for (name, prefix) in MGMT_INTERFACE|siftupipv4 %}
iface eth0 {{ 'inet' if prefix | ipv4 else 'inet6' }} static
address {{ prefix | ip }}
netmask {{ prefix | netmask if prefix | ipv4 else prefix | prefixlen }}
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6 changes: 6 additions & 0 deletions src/sonic-config-engine/sonic-cfggen
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Expand Up @@ -33,6 +33,11 @@ from swsssdk import ConfigDBConnector
from collections import OrderedDict
from natsort import natsorted

def sift_up_ipv4(value):
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sort_by_prefix

add comments:
for interface name is the same, then sort by prefix. v4 address is before v6 address

if not value:
return None
return sorted(value.keys(), key = lambda k: (k[0], 4) if is_ipv4(k[1]) else (k[0], 6))

def is_ipv4(value):
if not value:
return False
Expand Down Expand Up @@ -204,6 +209,7 @@ def main():
loader = jinja2.FileSystemLoader(paths)

env = jinja2.Environment(loader=loader, trim_blocks=True)
env.filters['siftupipv4'] = sift_up_ipv4
env.filters['ipv4'] = is_ipv4
env.filters['ipv6'] = is_ipv6
env.filters['unique_name'] = unique_name
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