Not to access specific sites to notice the setting mistake by trial and error

　As part of the increase in traffic, more and more companies are introducing IPv6 are increasing.However, the introduction of IPv6, which is different from IPv4, often develops into unexpected troubles.N -OS, which sells, rental, and network construction of IT equipment, mainly in Kagoshima Prefecture, is one company that has encountered such troubles.

　The company has introduced an IPv6 compatible Internet line (hereinafter referred to as IPv6) at the sales office in conjunction with the new construction of Kanoya City (Kanoya Sales Office).However, this encountered a situation where it was not accessible to a specific website.How did the person in charge solve the trouble?Introducing the whole story.

新設の営業所にIPv6を導入

　First, let's explain how the company introduced the IPv6 line to Kanoya Sales Office.Satoshi Nagata, who is in charge of the design, construction and operation service of networks at the company, is also a system administrator in the company.One day in February 2021, his boss asked him to build a network because he opened the Kanoya Sales Office.

　The headquarters Internet line uses IPv4 PPPoE connection.The number of video conferences has increased due to the influence of the new colon virus, which may significantly slow down.For this reason, the newly established Kanoya Sales Office has decided to introduce IPv6 lines by IPoE connection in preparation for an increase in traffic.

　In the original plan, we planned to build a network before opening a sales office.However, the rooms to move in were used by the former residents just before the opening, so they could not work until April 1, 2021 on the opening date.

　Nagata started working around 10 o'clock on the same day.He promoted the router setting, referring to the provider's FAQ site contracted for the IPv6 line."Headquarters routers were managed on a CUI basis, but the routers of the sales office were set on the GUI management screen. This is the first time I have set an IPoE connection with this router, so I follow the wizard on the management screen.I set it. "(Mr. Nagata).

　The headquarters and sales offices are connected by VPN services to access the headquarters file server and customer management server.Since the headquarters network is IPv4, the network of the sales office was made into a dual stack configuration for IPv4 and IPv6.