netinet6.icmp events

Contributors

netinet6.icmp.chksum

Severity

ERROR

Description

This message occurs when the system receives an Internet Control Message Protocol(ICMP) message, and while processing the ICMP message it finds a checksum error.

Corrective Action

(None).

Syslog Message

ICMP6 checksum error (%d|%x) %s.

Parameters

icmpType (INT): ICMP header type field.
checksum (INTHEX): Checksum value.
ipAddress (STRING): Printable that is a loggable representation of IP address.

netinet6.icmp.redirect

Severity

NOTICE

Description

This message occurs when an ICMPv6 redirect message is received. The redirect might be received due to either a misconfigured route or a man-in-the-middle ICMP redirect attack.

Corrective Action

When enabled, ICMP redirects can be disabled using the "network tuning icmp6 modify -is-v6-redirect-accepted false" command. However, disabling ICMP redirects might lead to connectivity problems or longer delays of data transfers.

Syslog Message

Received %lu ICMPv6 redirect messages for IPspace "%s".

Parameters

no_of_redirects (LONGINT): Total number of ICMPv6 redirects received for the specific IPspace.
ipspace (STRING): The IPspace for which the redirect packets are received.

netinet6.icmp.reject.equal

Severity

ERROR

Description

This message occurs when the system rejects a redirect because both router case and on-link destination case are equal.

Corrective Action

(None).

Syslog Message

ICMP6 redirect rejected; neither router case nor onlink case: %s.

Parameters

addressBuff (STRING): Contains IP6 addresses.

netinet6.icmp.reject.length

Severity

INFORMATIONAL

Description

This message occurs when there is a lladdrlen mismatch for the specified IP6 address.

Corrective Action

(None).

Syslog Message

icmp6_redirect_input: lladdrlen mismatch for %s (if %d, icmp6 packet %d): %s.

Parameters

ip6address (STRING): Printable that is a loggable representation of the IP address.
mediaAddrlen (INT): Media address length.
lladdrlen (INT): Address length.
addressBuff (STRING): Contains IP6 addresses.

Severity

ERROR

Description

This message occurs when the system rejects an Internet Control Message Protocol6 (ICMP6) redirect.

Corrective Action

(None).

Syslog Message

ICMP6 redirect sent from %s rejected;It must be from the linklocal address.

Parameters

ipAddress (STRING): Printable that is a loggable representation of the IP address.

netinet6.icmp.reject.ndopt

Severity

INFORMATIONAL

Description

This message occurs because of invalid neighbor discovery options.

Corrective Action

(None).

Syslog Message

icmp6_redirect_input: Invalid neighbor discovery option, rejected: %s.

Parameters

addressBuff (STRING): Contains IP6 addresses.