Ellis wormhole and energy conditions

I'm a bit puzzled about some calculations regarding the Ellis wormhole metric, prompted by Exercise 2.1(b) in Eric Poisson's "A Relativist's Toolkit". Suppose the metric has the form: $ds^2 = -dt^2 + dl^2 +(n^2+l^2)\Omega^2$ Then, calculating the Ricci and Einstein tensors, and assuming EFE, one can easily show that this spacetime violates NEC, WEC, SEC and DEC at $l=0$ . But when I have the metric in the following form (as in Poisson's book): $ds^2 = -dt^2+dl^2+r^2(l)d\Omega^2$ with suitable restrictions on $r$ , and calculate Ricci and Einstein tensors at $r_0 := r(0)$ , I get $R_{\theta\theta} = 1$ and $R_{\phi\phi} = \sin^2(\theta)$ as only non-zero terms, and $G_{tt} = 1/r_0^2$ and $G_{ll} = -1/r_0^2$ . In that case, all the above energy conditions are respected. I don't know what's going on here: I checked the calculations with some software. What am I missing?