Vicfred

OpenBSD PF config at /etc/pf.conf:

# -------------------------------------------------------------------------
# PF ruleset: 2 LANs (em1/em2) -> NAT out WAN (em0)
# - Default deny
# - Quiet WAN (drop inbound)
# - NAT for both LANs
# - Force clients to use router Unbound (block outbound 53/853 from LANs)
# - Isolate LAN A and LAN B

Vicfred

Below is a from-scratch OpenBSD router runbook you can keep as your “fresh install checklist”. It assumes your apu2c with 3 Intel i211AT NICs and your usual style: OpenBSD + rcctl, and you prefer dhcpd_flags="em1 em2" in rc.conf.local (no /etc/dhcpd.interfaces). I’ll also use your LAN search domain: cyberia.home.arpa.

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0) Assumptions and goals

Topology (adjust names if yours differ):

• em0 = WAN (behind CGNAT, upstream router gives it DHCP)
• em1 = LAN1 172.16.0.0/24 (router IP 172.16.0.1)

Vicfred

Meme Tag List (English / Spanish)

English tag	Spanish tag / explicación corta
reaction	reacción (respuesta genérica)
acknowledge	visto / anotado
agreement	de acuerdo / same
disagreement	no / nah
deflection	desviar tema / cambiar de tema
stalling	dando largas / luego te digo

Vicfred

Docker

docker system df # See what's eating space

docker ps
docker ps -a
docker container ls

docker stop <container> # SIGTERM, then SIGKILL after 10s (use -t N to change)

Vicfred

ebuild --force /var/db/repos/dlang/dev-util/serve-d/serve-d-0.8.0_beta18.ebuild digest

Vicfred

no need separate /boot partition for BIOS on qemu EFI requires extra work to configure on qemu, BIOS is enough

/etc/portage/make.conf

#------------------------------------------------------------------------------
# CPU & optimization flags
#------------------------------------------------------------------------------
# march=znver4      → tune for AMD Zen 4 (Ryzen 7000 series)
# O2                → safe optimization level

Vicfred

size_t lowerBound(long[] arr, long value)
{
  size_t first = 0;
  size_t count = arr.length;
  while (count > 0)
  {
    size_t step = count / 2;
    size_t mid  = first + step;
    if (arr[mid] < value)

Vicfred

✅ Step 1: Install Emoji Font

emerge media-fonts/noto-emoji

This gives you Noto Color Emoji, which supports full-color emoji rendering.

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Vicfred

Levenshtein Edit Distance – Dynamic Programming Walk‑through

1. State definition

dp[i][j] = minimum edits needed to change
           the first i characters of A (A[0..i‑1])
           into the first j characters of B (B[0..j‑1])

Vicfred

Normal binary search

function binary_search(A, n, T) is
    L := 0
    R := n − 1
    while L ≤ R do
        m := floor((L + R) / 2)
        if A[m] < T then // everything on the left is less, move right, i.e., delete left
            L := m + 1
 else if A[m] &gt; T then // everything on the right is more, move left, i.e., delete right