Synopsis: | netmask6(ipv6/mask) |
Description: Select only messages sent by a host whose IP address belongs to the specified IPv6 subnet. Note that this filter checks the IP address of the last-hop relay (the host that actually sent the message to syslog-ng OSE), not the contents of the HOST field of the message. You can use both the regular and the compressed format to specify the IP address, for example, 1080:0:0:0:8:800:200C:417A or 1080::8:800:200C:417A. If you do not specify the address, localhost is used.
Use the netmask (also called prefix) to specify how many of the leftmost bits of the address comprise the netmask (values 1-128 are valid). For example, the following specify a 60-bit prefix: 12AB:0000:0000:CD30:0000:0000:0000:0000/60 or 12AB::CD30:0:0:0:0/60. Note that if you set an IP address and a prefix, syslog-ng OSE will ignore the bits of the address after the prefix. To filter IPv4 addresses, see netmask().
The netmask6() filter is available in syslog-ng OSE
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Caution:
If the IP address is not syntactically correct, the filter will never match. The syslog-ng OSE application currently does not send a warning for such configuration errors. |
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