[R] extract values from a vector

[Antje]

Hello,

I'm looking for a solution for the following problem:
I have two vectors

V1 <- c("apple","honey","milk","bread","butter")
V2 <- c("bread","milk")

now, I would like to know for each element in V1 if it's equal to one of 
the elements in V2
I could do:
which(V1 == V2[1] | V1 == V2[2])

but what if I don't know the length of V2 and it's content???

Thank you in advance!

Antje