Platform: Debian 9
Matrix/synapse version: 0.22.1-1
I first installed the necessary dependencies:
$ pip install lxml
$ pip install netaddr
$ pip install twisted
$ sudo apt install libxslt1-dev
I then edited /etc/matrix-synapse/homeserver.yaml so that:
url_preview_enabled: true
url_preview_ip_range_blacklist:
- ‘127.0.0.0/8'
- ‘209.58.160.224/32’
- ‘fc00::/7’
Since my server only has an external IP and no internal subnet i figured this would be ok.
Synapse service then keeps restarting and producing this error:
Sep 30 01:44:12 hostname python[29155]: config["url_preview_ip_range_blacklist"]
Sep 30 01:44:12 hostname python[29155]: File "/usr/lib/python2.7/dist-packages/netaddr/ip/sets.py", line 121, in __init__
Sep 30 01:44:12 hostname python[29155]: for cidr in cidr_merge(mergeable):
Sep 30 01:44:12 hostname python[29155]: File "/usr/lib/python2.7/dist-packages/netaddr/ip/__init__.py", line 1549, in cidr_merge
Sep 30 01:44:12 hostname python[29155]: cidr = IPNetwork(ip)
Sep 30 01:44:12 hostname python[29155]: File "/usr/lib/python2.7/dist-packages/netaddr/ip/__init__.py", line 933, in __init__
Sep 30 01:44:12 hostname python[29155]: raise AddrFormatError('invalid IPNetwork %s' % addr)
Sep 30 01:44:12 hostname python[29155]: netaddr.core.AddrFormatError: <exception str() failed>
Sep 30 01:44:12 hostname systemd[1]: matrix-synapse.service: Main process exited, code=exited, status=1/FAILURE
I also tried these but they all produced the same error:
url_preview_ip_range_blacklist:
- ‘127.0.0.0/8'
- ‘209.58.160.224/32’
- ‘fc00::/7’
url_preview_ip_range_blacklist:
- ‘127.0.0.0/8'
- ‘209.58.160.224/32’
#- ‘fc00::/7’
url_preview_ip_range_blacklist:
- ‘127.0.0.0/8'
#- ‘209.58.160.224/32’
#- ‘fc00::/7’
More configurations that failed with the same error:
url_preview_ip_range_blacklist:
- ‘127.0.0.0/8'
# - ‘209.58.160.224/32’
# - ‘fc00::/7’
url_preview_ip_range_blacklist:
- ‘127.0.0.0'
# - ‘209.58.160.224/32’
# - ‘fc00::/7’
url_preview_ip_range_blacklist:
- ‘127.0.0.0/8'
- ‘209.58.160.224’
# - ‘fc00::/7’
Final solution was to change the quotation marks as Max suggested:
This worked, final syntax was:
url_preview_enabled: true
url_preview_ip_range_blacklist:
- '127.0.0.0/8'
- '209.58.160.224/32'
- 'fc00::/7'
