Posters reappeared at various times last year, with students growing frustrated after the university initially declined to take them down, saying they were a free speech issue.
Students staged sit-in protests in the Clock Tower and a petition was created calling for zero tolerance of racism at the university.
The current batch of posters directs people to a website for a relatively new white supremacist group. A post written at the end of February on the website promised a fresh drive of poster-sticking all over New Zealand.
Twitter user @CentralCommiTi put out a call for people to rip the posters down when they saw them without taking pictures or sharing their racist content.
He said he had pulled down "about a dozen in 10 minutes".
He also tweeted that someone had written white supremacist graffiti in a bus stop on Queen St.