diff
2 	_DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256);
---
2 	if ((field + 256) < MAX_ALLOWED_VALUE) {
2 	    _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field + 256);
2 	} else {
2 	    // Handle error or overflow case
2 	}
