  We prove an $\Omega$-result for the quadratic Dirichlet $L$-function $|L(1/2,
\chi_P)|$ over irreducible polynomials $P$ associated with the hyperelliptic
curve of genus $g$ over a fixed finite field $\mathbb{F}_q$ in the large genus
limit. In particular, we showed that for any $\epsilon\in (0, 1/2)$,
  \[
  \max_{\substack{P\in \mathcal{P}_{2g+1}}}|L(1/2, \chi_P)|\gg
\exp\left(\left(\sqrt{\left(1/2-\epsilon\right)\ln q}+o(1)\right)\sqrt{\frac{g
\ln_2 g}{\ln g}}\right),
  \]
  where $\mathcal{P}_{2g+1}$ is the set of all monic irreducible polynomial of
degree $2g+1$. This matches with the order of magnitude of the Bondarenko--Seip
bound.
