Ubuntu due to IPV6 not booting, causing SNMPD to fail to start

Today's Ubuntu system for SNMPD configuration, after completion can not be started, after viewing the syslog log, the following error:

Mar 3 15:11:45 hk-en-prod-web02 snmpd[10060]: Error on subcontainer ' ia_addr ' Insert (-1)
Mar 3 15:11:45 hk-en-prod-web02 snmpd[10060]:/etc/snmp/snmpd.conf:line 146:warning:unknown token:defaultmonitors.
Mar 3 15:11:45 hk-en-prod-web02 snmpd[10060]:/etc/snmp/snmpd.conf:line 148:warning:unknown token:linkupdownnotificat Ions.
Mar 3 15:11:45 hk-en-prod-web02 snmpd[10060]: Turning on Agentx master support.
Mar 3 15:11:45 hk-en-prod-web02 snmpd[10060]: Error opening specified endpoint "udp6:[::1]:161"
Mar 3 15:11:45 hk-en-prod-web02 snmpd[10060]: Server Exiting with code 1

This review found that IPv6 is not started, the information is as follows:

Eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> MTU Qdisc pfifo_fast State up group default Qlen 1000
Link/ether 00:0c:29:a7:5c:96 BRD FF:FF:FF:FF:FF:FF
inet 172.16.1.25/24 BRD 172.16.1.255 Scope Global eth0
Valid_lft Forever Preferred_lft Forever

Workaround:

1, settings are not monitored on the IPv6:

#agentAddress udp:161,udp6:[::1]:161
Agentaddress udp:161

2. Start IPv6:

Net.ipv6.conf.all.disable_ipv6 = 0net.ipv6.conf.default.disable_ipv6 = 0net.ipv6.conf.lo.disable_ipv6 = 0

This article is from the "Autumn Fairy tale" blog, please be sure to keep this source http://wushank.blog.51cto.com/3489095/1903014

Ubuntu due to IPV6 not booting, causing SNMPD to fail to start