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Getting rid of "set firewall options" and move it from:
set firewall options interface ethX adjust-mss 1400
set firewall options interface ethX adjust-mss6 1400
to:
set interfaces ethernet ethX ip adjust-mss 1400
set interfaces ethernet ethX ipv6 adjust-mss 1400
In addition add an extra option called clamp-mss-to-pmtu instead of a value.
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airbag must now be explicitly installed.
the patch also allow to fully disables the installation of the logging
code at setup (and not just installing and doing nothing)
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os.system does print the ouput of the command, run() does not.
A new function called call() does the printing and return the error code.
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As little change a possible but the function call
The behaviour should be totally unchanged.
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[ firewall options interface wg01 ]
Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/firewall_options.py", line 139, in <module>
apply(c)
File "/usr/libexec/vyos/conf_mode/firewall_options.py", line 97, in apply
if tcp['new_chain4']:
TypeError: 'NoneType' object is not subscriptable
delete [ firewall options ] failed
delete [ firewall ] failed
Commit failed
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* clamp MSS IPv4
set firewall options interface pppoe0 adjust-mss '1452'
* clamp MSS IPv6
set firewall options interface pppoe0 adjust-mss6 '1452'
* disable entire rule
set firewall options interface pppoe0 disable
Output
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$ sudo iptables-save -t mangle
# Generated by iptables-save v1.4.21 on Sun Apr 21 12:56:25 2019
*mangle
:PREROUTING ACCEPT [1217:439885]
:INPUT ACCEPT [290:52459]
:FORWARD ACCEPT [920:375774]
:OUTPUT ACCEPT [301:100053]
:POSTROUTING ACCEPT [1221:475827]
:VYOS_FW_OPTIONS - [0:0]
-A FORWARD -j VYOS_FW_OPTIONS
-A VYOS_FW_OPTIONS -o pppoe0 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1452
COMMIT
Completed on Sun Apr 21 12:56:25 2019
(cherry picked from commit 476aa4c3a561ea0ef0bf9b4c26ec8b78d18a5d02)
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